I havent installed one, but no painting is required (i think) the black part is an applique that you just put over the indent in the fatory hood.
If you buy and install this, could you post some pics of the install? I've always wanted to see the process, as I think one might look good on the Bullitt
Better of getting the kit that uses a real mach1 hood. sometimes those applique things dont stay down very well. And if your going to bother doing it at all might as well do it the best way the first time. Plus with the one in the link you are going to have to cut a hole in the hood.