If your talking firewall and inner fenders, I beleive he actually used car paint, but he has that skill. I have seen it done with spray cans and has turned out real nice. Just gotta make sure you prep it good. If you do that, go with a satin black, it looks more natural. It adds just enough shine to set it off. Gloss black looks fake, it has a want to be shine as I call it and flat black, well would just make it looked primered. I'm sure if you talk to David, he's a member on here also, David99GTP, he could probably give you some tips on what he moved for painting, prep work, etc. Throw him a PM. I haven't gotten that far yet and wouldn't want to give you any unnecessary advice. Other than that, I can probably help you with any other questions you may have.