need your opinions...I've removed my front bumper assembly from my 64 bird...while I've got it off the car I'd like to take care of the rust on the inside of the bumpers...would POR-15 be a viable option for this? I've already sanded it down pretty good but can't get it all off...either way I'd like to "seal" the inside to prevent and futher rust issues...thanks

Yes, I think POR15 would be a very good choice.

you might want to try a rust converter sold by wal-mart. it turns rust to a black oxide & leaves a primer on the surface

POR15 is an excellent product. Would use nothing else to stop rust dead in it's tracks. Goes on quite easy.

I've used POR15 and also Rustolium's REFORMER. Both I found to do the job very nicely.