Id be right on the Kenworth Challenge mixer kit...it was awesome as a kid..! here is a few others Id love to see or find... 69-72 Grand Prix...(even the custom one called Super Fly). 69,71,72,73 Impala/Caprice. Universal Dune Buggy Jeep kit with 1/2 cab options. 60-63 Ford pickups. 70s Ford Modified race team set...pickup/trailer and early modified dirt track car. 71,72 Pontiac Sprint II maybe MPCs old Mild and Wild series kits with the 2 in 1 or 3 in 1 options? the AMT Craftsman series kits.