Dash paint - gloss level
Personally, when I re-did mine I used good old Krylon semi-gloss sprayed on from a good distance to give it texture. For the amount of exposed sheet metal it looks great! And was very in-expensive to boot.
Of course, your finished top coat is only as good as your preparation. Sand smooth, prime, sand smooth, prime, sand smooth, paint.
I know it's low-rent, but it works....
No need to make things more difficult than they already are.... :-D