For what part? for lower brackets and parts exposed to stuff from below, I used Eastwood chassis paint. Remove rust with chem dip, clean well, then eastwood chassis primer, then top coat. For parts exposed to high heat, like the shields by the exhaust, I used high temp silicone paint. Same prep, a couple coats of the silicone paint. For parts on the top, throttle linkages, brackets, ps pump, coil pack base, etc etc I used regular black engine enamel. Same prep, no primer though.