Fiberglass body panels. Are they for drag only?

[bryon engdahl]

has anyone out there used Unlimited Products brand fiberglass fenders or other products?  I have a street car 72 Charger and live on a dirt road. I'm having a real hard time finding sheetmetal fenders for my car that was in a wreck in Dec.  My biggest two concerns are: The fenders they offer. They claim they will fit 71-74 cars (and we all know 71, 72,& 73-74 are all different and are "year only" specific. How do they look when installed? What year were they actually replicated from. And #2 will they hold up to normal street use? Or will they crack or split and look terrible in a short period of time? Any comments are appreciated.