Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Nova — NUMMI (1985–1988) page.

Chevrolet Nova — NUMMI (1985–1988)

The front-wheel-drive Nova of 1985–1988 was built by NUMMI in Fremont, California, on the Toyota Sprinter, as a 4-door notchback sedan and a 5-door hatchback (Wikipedia); the Heritage kits' MVMA specification forms name Toyota Motor Corporation as manufacturer. The 1987 and 1988 order guides list the 4-door notchback (1SK19) and 5-door hatchback (1SK68) with the 1.6L LC9 engine, a CL custom feature package and, for 1988, a Twin Cam notchback (1SL19) with the 1.6L LW0 engine. The 1985 and 1986 kits are specification forms that print no RPO codes, so no code is claimed for 1985–1986, although NICB's 1986 VIN manual lists the Nova. The order guides give paint as two-digit color numbers and interior trim as four-character trim combinations rather than RPO codes, so neither is listed here.

Codes

Engines

Code	Description	Years	Models/Notes	Confidence
LC9	Engine, 1.6L L4, 2 barrel carburetor	1987–1988	notchback and hatchback, standard ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1987 Chevrolet Nova, p.12 · 1987 Chevrolet Nova, p.52 · 1988 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.14	confirmed
LW0	Engine, 1.6L L4, twin cam, multiport fuel injection	1988	only in: Twin Cam notchback (1SL19), standard; the 1988 order guide prints LWO ⛭ GM Heritage — 1988 Chevrolet Nova, p.10	confirmed

Transmissions

Code	Description	Years	Models/Notes	Confidence
MM5	Transmission, 5 speed manual	1987	notchback and hatchback, standard; the same page prints the extra-cost automatic as MXT, which is not a legible code; from the brochure p.52 alone ⛭ GM Heritage — 1987 Chevrolet Nova, p.52	confirmed

Packages & Trims

Code	Description	Years	Models/Notes	Confidence
1SA	Option package 1SA	1987–1988	1987: Nova option package 1, notchback and hatchback; 1988: the no-charge package of the Twin Cam (p.10, with the 5 speed manual, tachometer and aluminum wheels) and of the hatchback (p.14, with the 5 speed manual); the notchback page's code is illegible ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.14	confirmed
1SB	Option package 1SB	1987–1988	1987: Nova option package 2; 1988: Twin Cam package at 790.00 (p.10) and hatchback package at 645.00 (p.14, printed 15B); the 1987 notchback page prints ISB ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10	confirmed
1SC	Option package 1SC	1987–1988	1987: Nova option package 3; 1988: Twin Cam package at 675.00 with air conditioning (p.10) and hatchback package at 900.00 (p.14, printed 15C) ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10	confirmed
1SD	Option package 1SD	1987–1988	1987: Nova option package 4; 1988: Twin Cam package at 1465.00 (p.10) and hatchback package at 1515.00 with power door locks (p.14) ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.14	confirmed
1SE	Option package 1SE	1987–1988	1987: Nova option package 5, from the notchback page (the hatchback page's codes are illegible); 1988: Twin Cam package at 1370.00 with speed control and power windows (p.10); the CL notchback page (p.12) prints a 2119.00 package line whose code is illegible ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.10	confirmed
1SF	Option package 1SF	1987–1988	1987: Nova CL option package 1, from the notchback page; the hatchback page also prints 1SF, but its position after Nova option package 5 leaves its package unclear; 1988: Twin Cam package at 2160.00 (p.10) and the CL notchback's CL option package at 2539.00 (p.12) ⛭ GM Heritage — 1987 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.12	confirmed
1SG	Option package 1SG	1987	Nova CL option package 2, from the notchback page (the hatchback page's codes are illegible) ⛭ GM Heritage — 1987 Chevrolet Nova, p.10	confirmed
1SH	Option package 1SH	1987	Nova CL option package 3, from the notchback page (the hatchback page's codes are illegible) ⛭ GM Heritage — 1987 Chevrolet Nova, p.10	confirmed

Equipment

Code	Description	Years	Models/Notes	Confidence
B34	Floor mats, carpeted front, color-keyed	1987	1988 not claimed: the 1988 guide (revised 12-4-87) prints B34 front-only only in its alphabetical option index (p.8, not for ordering), while its ordering pages offer the one front-only floor-mat option at 15.00 under other prints (835 and B35 on the Twin Cam page, B35 on the CL notchback page, B36 on the hatchback page); only the tentative price page prints it (as 834, at 25.00), so the 1988 B34/B35 readings conflict ⛭ GM Heritage — 1987 Chevrolet Nova, p.8 · 1987 Chevrolet Nova, p.12	confirmed
B35	Floor mats, carpeted rear, color-keyed	1987	the 1987 hatchback order guide prints B35 as the rear-only mats ⛭ GM Heritage — 1987 Chevrolet Nova, p.12	confirmed

Internal / Process

Code	Description	Years	Models/Notes	Confidence
NA5	Emission system, federal standard	1987–1988	internal code the 1987 order guide says it also satisfies high altitude requirements; some pages print NAS ⛭ GM Heritage — 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.12	confirmed
YF5	Emission system, California requirements	1987–1988	internal code some pages print YFS ⛭ GM Heritage — 1987 Chevrolet Nova, p.12 · 1988 Chevrolet Nova, p.10 · 1988 Chevrolet Nova, p.12	confirmed

Sources

Factory documents (T1)

[HK] chevrolet/1985-Chevrolet-Nova.txt — 1985 MVMA specifications; no RPO codes
[HK] chevrolet/1986-Chevrolet-Nova.txt — 1986 MVMA specifications; no RPO codes (pp.26, 34–35 are dimension definitions)
[HK] chevrolet/1987-Chevrolet-Nova.txt — 1987 dealer order guide (pp.8–12) and brochure dimensions/specifications page (p.52, the only source for MM5)
[HK] chevrolet/1988-Chevrolet-Nova.txt — 1988 dealer order guide, revised 12-4-87 (pp.8–14)
Notes only (not cited): chevrolet/1988-Chevrolet-Nova.txt price pages pp.16–18, tentative prices effective with initial shipments of 1988 models, published September 25, 1987

Other sources

https://en.wikipedia.org/wiki/Chevrolet_Nova — accessed 2026-10-21 (plant, platform, body styles)
docs/reference/nicb/nicb1986-gm.txt p.41; docs/reference/nicb/nicb1988-gm.txt pp.41–42 — NICB VIN manuals (Nova series and body types; no trim badges printed)