two part clear is a must for any paint job if you want it to hold up, its a bit pricey at about 30 bucks a can here in Canada anyways and the shelf live is i think two days after you open the bottom seal, but the finish is much much nicer, i just finished re-doing a front air dam for my bike that turned out pretty nice, i might still 3m it though to prevent to much rock chips from the front tire.
