I'm doing a color change on a Toyota Tacoma bed cap. Current paint is in good shape and will be going from a medium Grey color to a toyota grey/silver 2010 color. I don't have the code right this minute. My question is 1. Can I sand with 400 and just do a seal coat with SPI epoxy for adhesion and go base from there? 2. I'd appreciate advice on how much base to cover...my gut tells me a pint but I can't run out in the middle either. I will be using either shopline plus or DBC.