Thanks for the info I have been debating on what to do for so long, and I also have had issues with Rustoleum not tending to harden and being very brittle on its own. I have bought things like eastwoods chassis black but didn't like the way it looked, then I got Summits chassis shield but that has to go down to bare metal no matter what to stick very well. My car is a Norwood car so the primer is etched into the metal and is taking forever to get off. I would rather just scuff it with some sand paper or a wire wheel. I will give that a try.
Thanks again,
Josh
P.S. I also need to redo my sub frame, used the POR-15 black and was not impressed with how its holding, love the silver though it sticks like glue. Sorry to hi-jack