Plumb Crazy cars only had black interior from all the real cars I have seen and dealt with. Even my Moms Demon had black interior with PCP color. That's not PCP by the way. PCP is not metallic like yours.
The Bee chassis works better due to how the firewall and fender wells are made on the Bee compared to the Charger. I already have one under the same car being built here, but it's just a mock up for now. I'll get to it in the future, I hope. lol
Since DuPont sponsors and supplies all of Jeff's paint, it will have decals instead of a vinyl wrap. Some use wraps for speed and repairs and such. Some paint and decal. Some clear over decals for certain tracks and some clear the car and then decal for others. All cars are cleared and waxed unless they use wraps. Watch a night race and the paint and clear jobs really show up under the lights.
Not familiar with the first one. The Lenco is a planetary trans used with manual or air shifters. Uses a timed clutch for launches. Used in Pro Stock and some street applications. The vette tranny wont hold up on an engine make a 1000 plus hp. Top fuel cars do not use transmissions. They use a timed multi stage clutch direct drive through a reverser so it can be backed up after a burn out.
If you are asking about the header wrap, yes they do. Use it on more than just headers too. Try the no glue type medical tape that only sticks to itself. And just paint it dark tan or black. I have some, but it's green from the factory.
I noticed that Ford engine only has one slot on each side. The Chevy usually has two on each side. They go right between the two cylinders in the front and between the two cylinders in the back since the plugs are between the first and second pipe header tube on the front and between the second to last and last header tube in the rear. If you look close at your covers,there appears to be a circle or indent in two places that can be drilled out to let the wires go through the shield.