Performance package, special

Years 1969, 1978–92, 1998–01, 2004–05 Models 5 Factory citations 4

Also described as Power Assist Group (auto, power steering, disc brakes)Special Performance Package — 15×8 snowflake wheels, larger sway bars, quicker steering; 4-wheel discs from ’79Special performance packageSales package, appearance and performance

Also documented for Chevrolet

Documented applications

Firebird / Trans Am

1969 Single-source

NOT the 1978+ performance package — code reuse
1978–1981 Confirmed

Trans Am (& Formula); NOT the 1969 WS6

Fiero (1984–1988)

1984–1985 Single-source

standard on the SE in 1984–1985 per the OSG, which names no other year; the rparts and Halderman lists agree

Firebird — Third generation (1982–1992)

1982–1992 Single-source

Wikipedia: standard on the 1987–1992 Formula and GTA; Firebird years: Wikipedia 1982–1985, 1987–1992; thirdgen.org label decodes 1986; 3rdgenformula option pages 1987–1992

Firebird — Fourth generation (1993–2002)

1998–2001 Factory-verified

GM factory document — 1998 pontiac firebird rpo code list, p.1.
GM factory document — 2001 pontiac firebird rpo code list, p.1.

Grand Prix — Eighth generation (2004–2008)

2004–2005 Factory-verified

GM factory document — 2004 pontiac grand prix rpo code list, p.1.
GM factory document — 2005 pontiac grand prix rpo code list, p.1.

This page aggregates every documented appearance of WS6 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.