Dave, I would wait to put any base on due to the fact that it's metallic. Panel painting metallic is not recommended to to the fact that you might not get the flakes to lay out uniformly. I recommend you get the whole car ready to paint, reassemble the car,deck lid,doors, hood, spray the base inside & out, jambs & all, let it dry, dissassemble & clear everything. This way you wont get tape lines like I have on my car. Any questions call me