Have a '90 K5 and I'm about to pull the engine. While its out I wanted to paint the engine bay, axles, frame, etc. to make it look brand new when I go back up with it. I realize I'm going to have to just get under there and start sanding. However sanding that kinda stuff is somewhat difficult. Do any of you have any tips/advice for me to make this process a little easier? also, I was looking at the Eastwood products like their "chassis black" coating. Has anyone used this? I don't want that rubbery undercoating stuff. The truck didn't come with that on it anyway.