Looking good so far Leines! Just remember, if you paint something with a rattle can that is going to be cleared, use the same brand of clear and paint. You shouldn't have any trouble if you use Rustoleum Crystal Clear with any Rustoleum paint. Your airbox doesn't look that bad to me. if you want to paint any plastic, you can use Krylon Fusion. Just don't clear over it, it doesn't shine much more with clear anyway. You should always wet sand between any color coats and between clear coats as well. Use a 2000 grit wet/dry paper just to knock down the shine. The more coats you put on, the better it will look. I still have a crap load of parts if you need anything, give me a shout. I just bought a running (but crappy looking) '94 the other day for $200. I will send you some pics. It was running kind of weak so I ordered new rings for it and am putting it back together today maybe. Later bro.