I have their front and rear bumper covers, as well their speedster covers. Hood I got elsewhere and wished that I had gotten ABC instead.
My front bumper is cracked in 7 different places, even after several of them had been repaired and resprayed. It was supposed to be urethane but appears to be fiberglass. But to be honest, that bumper is 7 years old, and Ive hit a few things with it. The rear bumper is 5 years old, and my speedster covers are 9 years old, and theyre still pretty good. No cracking.
As far as fitment issues, I would say that there arent any, or if there are, I would say, the closest fitment youre going to get it OEM. Remember, this is an aftermarket company. Ive heard of people complaining about ABCs quality and fitment, and then turn around and give the exact same complaints toward official legitimate saleen parts.