I already read the window trim paint FAQ for that guys EG and it says use 800 grit and black trim paint.. but from what I know, I used 800 grit and there wasnt any sort of progress on my window trim.. can I use 400 grit?

Also I cant find any window trim paint.. unless its the same as the Duplicolor body paint for trim and engine at Kragen.

And is it alright to use the engine gloss spray for headlights? What temp?