Engine > Cylinder Block Components > Engine Mount Set. LS CONVERSION MTR MOUNT SET. GM LS Series Motor Mount Conversion Kit, N/A, Quantity needed per vehicle: 1, Engine Version is Chevrolet. 1979 1980 1981 1982 Chevrolet Corvette.PN[3.1114] Short And Wide Mount; 2 5/8x1.75 in. For a firmer, more controlled ride, throw out those mushy rubber suspension bushings and step up to Energy Suspension's polyurethane bushings. They'll tighten up your whole suspension, they're far more durable than rubber, and we stock Energy Suspension kits and components for hundreds of popular vehicles.