You'll want to research some body colours. The Mopars came in some pretty bright colours. I've always like the nickname of InViolet Metallic "Statutory Grape".
Try http://www.autocolorlibrary.com for some original color chip charts. Note that monitors do vary in colour, but it will get you in the ball park. I've always preferred the brighter colors for muscle cars. I mean, who wants a tan muscle car? I think the paint job should serve as a warning for the butt kicking you are about to receive in a race!
You might find a rattle can offers the best painting solution. Not only do they come in the more appropriate car colours, but I find ABs don't spray a wide enough pattern.
Revell kits are usually pretty good. I've got an AMT 69 Barracuda and a Revell 71 Plymouth GTX in my stash. I'm not crazy about the AMT kit, but Revell doesn't offer a late 60s Cuda. I really wanted a 67 Cuda to replicate my old car, but no luck...
Thin solder wire works well for brake and gas lines. Mopar liked using fake wood a lot, and I find that challenging to replicate. You might want to scout out Scale Auto forums for some hints.
Good luck, and don't forget, most muscle cars don't get the extreme weathering a tank does!