Cutlass Supreme Convertible
The W-body Cutlass Supreme convertible was a specialty-built open car based on the coupe, with conversion work by Cars and Concepts and a set of structural, top and trim pieces unique to the body style.
More than a coupe with the roof removed
Converting the W-body coupe required dedicated structural work and a complete power-top system. That makes the convertible mechanically familiar underneath but very different when sourcing body, weatherseal and roof-system parts.
Convertible-specific reinforcement
Underbody reinforcement and body-specific hardware compensate for the loss of the fixed roof structure. Corrosion and prior collision repairs deserve careful inspection.
Unique hardware
Hydraulics, latches, weather seals, glass alignment and trim availability can determine whether a project is easy to live with or difficult to finish.
Year-specific combinations
Engine and transmission offerings changed across the run. Use the year and RPO label to establish the correct original combination instead of relying on body style alone.
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.