Matt,

I use PPG base coat.

As I stated, I can tell no difference between this and K-36 as far as adhesion to fiberglass
and wet or dry sandability. (I've tried the wal-mart variety 'rattle can' primers and they
don't come close to this product.) Like I said, I wouldn't use it on a car but it seems to
work great on our stuff and the futher I can get from the ISO's the better. You be the judge.

W.G. Hunter