por-15 is the shizzle. i did the frame on my truck (body and everything completely off), and damn does it look nice. of course i took the time to sand blast the entire thing first so i could get a really smooth finish. i bought a gallon of the stuff, WAY WAY WAY too much for the entire frame. I did two coats and still have over a half gallon left.
i actually have pictures of the truck frame before and after the por job, omg, it is rediculous how much better it looks now.
a couple tips:
if you do you use por-15, any place that will see sunlight (uv rays) will need to be topcoated.
also, buy lots of brushes, cleaning that crap off of a brush is just plain retarded. just chuck the brushes when done.
dont forget to buy lots of rubber/doctor's type gloves, where a long sleeve shirt that you really dont like, where jeans, and old beater shoes. anything, and i mean anything you get this stuff on, it will stay on forever and then some. paint thiner will NOT remove it from your hands, there is not anything that will short of a belt sander. seriously, dont get it on your skin.
make sure the surface is really dry and really clean. if you are putting it to bare metal be sure to use their metal prep. get their marine clean to make sure your stuff is really clean.
i can post the pics if someone has a place i can host them. i am very happy with how the frame turned out for a first timer.
chad