40-60 Medium Duty 13 70-90 Series Heavy Duty 14 Bison 11 C10 29 C10 Suburban 28 C20 30 C20 Suburban 28 C30 30 Camaro 47 Caprice 32 Chevelle 10 Chevette 18 Corvette 46 El Camino 35 G10 24 G20 24 G30 24 Impala 34 K10 25 K10 Suburban 25 K20 29 K20 Suburban 24 K30 29 K5 Blazer 27 LUV 16 Malibu 30 Monte Carlo 27 Monza 23 Nova 36 P10 20 P20 21 P30 25 Titan 90 12 Vega 18