40-60 Medium Duty 23 70-80 Heavy Duty 23 Bel Air 57 Biscayne 46 C10 Panel 32 C10 Pickup 37 C20 Pickup 38 C30 Panel 32 C30 Pickup 38 C40 29 C50 29 C60 29 C80 26 Chevy II 52 Corvair 46 Corvair Truck 12 Corvan 31 Corvette 60 Impala 61 K10 Pickup 38 K20 Pickup 39 Nova 54 P10 Series 31 P20 Series 31 P30 Series 32 Suburban 38