You might get close with paints but you'll never get the mirror like finish of polished aluminum.
Here'* some stuff I did the hard way..
For the most part it'* sand paper from 220 to 2000 then aluminum polish with a buffing wheel and a dremel with strips of different sand paper for the tight spots. No wet sanding or compounds.
(This pan is stamped steel.. fml)
Polishing stuff is heartbreaking.. Out of all that, the master cylinder got brake fluid on it and messed up the clear powder coat. The wheels got the clear powder coat nicked and started to spiderweb oxidize under. That alt cover started to do the same. And that stamped steel pan started to rust in tiny little spots under the clear. Steel is workk to polish too.
I opted to get stuff powder coated clear since it will take heat and not yellow.. and I know I don't really feel like repolishing crap every season. So much for that.
I still haven't given up though. I'm going to give Zoop sealer a try. When I first looked into it there were a lot of negative forum responces. More recently I think people actually followed the directions and have had success with it.