1978 - 1988 Chevy Malibu, Monte Carlo, Pontiac Grand Prix, Olds Cutlass, Buick Regal. Also Camaro 70 - 81. Clears side and rear engine mounts. 5/16” flange, 16ga primaries, O2 sensor bungs installed in collector. Will not fit with stock Air Conditioner box. Temporary non-high temperature paint