haha, I'll be honest, I was like... what the hell is a rocker cover?? I had to look up the difference in terminology. valve covers.. ahhhh now I get it! I even wrote aluminium for you guys. :-) As far as under the hood, I don't know if I'll really draw the theme in, because it just gets so dirty in there. I'll clean it every so often, but I could only consider detailing the engine bay if I was building a trailer queen or something.