Looking forward to watching this build. I don't have time to work on my models these days, but here's mine in progress. I've got six single-barrel carb setup, redone belt and pulley's and late Camaro rims set up in addition to drilled out headlights and shaved handles. Mild custom.
Love the subject, nice clean work! Only one question, is that thread for spark plug wires? If you can't find a hobby shop that has some, try old electronics, ie a mouse. The wire inside the cord is just about right for 7mm spark plug wire, very flexible, and the outer part can be heater hoses.
Nice subject, looking forward to seeing how this comes out. I built the 71 superbird from the old MPC body and the AMT 71 Charger chassis and engine. Cutting out the inner fenders from the Charger allowed me to fully detail the engine on the kit bash. I don't remember where I got the 5 slots from.