50-60 Medium Trucks 23 80 Series Heavy Truck 23 Bel Air 54 Biscayne 46 C10 Panel 26 C10 Pickup 31 C20 Pickup 33 C30 Panel 26 C30 Pickup 32 Chevelle 67 Chevy II 55 Corvair 41 Corvan 29 Corvette 59 El Camino 56 G10 Van 21 Impala 61 K10 Pickup 31 K20 Pickup 33 Malibu 52 Nova 54 P10 Series 22 P20 Series 24 P30 Series 24 Suburban 32