I wanna say yes, but Im thinking that polyurethane is kina like the factory sebring front bumper. If so..then the fiberglass is definitely lighter. I havent really seen factory fiberglass fender. Mine are fiberglass, but they're z fenders. I really dont think they have those made...I could be wrong..but I've looked all over and never saw any.

I do have a fiberglass kit..it will take some body work. Its time consuming. Its not too bad if u dont mind molding, but I got mine for $350 shipping included, Im satisfied. Im not done with the molding yet cuz of time, but...if u go to a body shop and they charge you more than $300 to hook u up, then they're ripping you off. I guess the simpler way to put it is..parts might have to be bent and heat treated...I still have to do a lil bit of that. If you dont mind working and saving for the polyurethane instead of spending time on the fiberglass..save the money. If I had a better job, Id go with the polyurethane..but I dont make that much money so....