well, obviously the bumper has gotta be made of fiberglass (and its mugen btw), but would it really matter for the side fenders if they were fiberglass or not? i mean, im not gonna be SCRAPING my fenders anytime soon.
hey man no way dewd if your gonna go jdm make sure u do it right the first time. oem sheet metal is way better than fiberglass. fiberglass cracks easy and i bet u won't like it as much. people also have problem with fitment. also if u don't have the money might as well go urethane at least it's better than fiberglass. good luck man