I took mine apart, sandblasted them and coated them with POR-15. Reassembled them and they look great. I just don't know how long they will hold up. POR-15 if really tough stuff, yet flexible.
Frank
No better smell than that of fresh paint. I've been building and painting cars/trucks for 47 years. Not gonna stop now. http://www.coxcustomcars.com/