1966 Chevy Chevelle SS 138 vin. 454 60 over, Howard Roller Cam, Bordix Aluminum Heads, 6:71 Blower with ADP 750 boost reference carbs. Has A/F meter- Fuel Pressure Gauge- Vac/Boost gauge mounted on back of blower. Factory Air Car with aftermarket A/C & P/S. 4 speed trans & 12 bolt rear.