Shawn, I recently did my frame 69 ss chevelle, I stripped it with a wire brush wheel/grinder, then I soaked the frame with POR Metal Ready and rinsed according to directions. After it dried, I coated with POR15 I sprayed two coats then applied a thrid coat with a brush, (spray helped me get into the hard to get spots. I then applied two coats of POR chassis black semi-gloss. I will say this it looks pretty, and I dropped a rather large wrench on it the other day and it didn't even leave a mark on the frame. As for weather durability I probably won't know for another year or two. unless I hit the lottery before then!!!Dusty