I've used POR15 on the frame area when the engine was out. The underside was done by a previous owner, probably more than 20 years ago now. It still looks good, sure it could use a little cleaning but no rust or flaking.
Good luck with the project. A month or so? That would take me years, if I could even do it.
__________________
Hank
70 Chevelle SS396(454), M20, 3.73
My Chevelle
|