So,, if you know how to prep the ABS properly, you can repair with fiberglass,
I'm molding my hold back end together and I have the ECC ones, and I'll be glassing it all together,!
Fiberglass will repair almost anything,, as long as you prep the material properly and, use the proper techniques!!
I have had the fiberglass ones from Street Scene, I liked them,, but I didn't like the body line in it!
The ECC ones, don't have the bottom body line in it, but rather they bubble down and carry the fender flare further!