Only 1029 of these made. The rarest of the high performance Oldsmobile made.
Behind the engine is a Muncie M21 4 Speed Trans w/ Hurst Shifter. Dual Exhaust, RLimited Slip Rear-End. Manual Brakes, HD 4 core Radiator. the W-31 package automatically upgraded the front and rear coil-sprung suspension to the FE2 heavy-duty components, including special springs and tubular hydraulic shocks.