W1 Performance Icons
The first W-body generation produced a small group of variants whose engineering, styling and rarity gave the platform an enthusiast identity far beyond the standard models.
The cars enthusiasts search for by name
These pages sit beside the model references rather than inside them. Each focuses on the hardware, identity and ownership details that made a specific W1 variant memorable.
Turbo Grand Prix ASC/McLaren
Turbocharged and intercooled 3.1L V6, ASC/McLaren development and one of W1’s most distinctive early performance programs.
Open deep dive → 1991–1994Chevrolet Lumina Z34
LQ1 24-valve V6, unique bodywork and a rare Getrag five-speed option made the Z34 Chevrolet’s W1 halo coupe.
Open deep dive → 1988–1993Cutlass Supreme International
Oldsmobile’s sport-oriented W1 trim evolved through multiple engines, chassis calibrations and eventually the LQ1.
Open deep dive → 1990–1995Cutlass Supreme Convertible
A specialty-converted W-body with unique structural, trim and top-system considerations.
Open deep dive → 1992–1996Buick Regal Gran Sport
Buick’s sport-luxury W1 coupe, culminating with the 205-hp Series II 3800 in 1996.
Open deep dive →Master Customs treats factory literature and GM archival material as the primary reference, with period road tests and established enthusiast resources used for context. Equipment, calibration and availability can vary by model year, body style and RPO, so verify a specific car by VIN/RPO and service information before ordering parts.