My brother is in the process of fitting two new fenders and a hood from US Body on his 64 falcon. The fender body lines are a bit fuzzy, not as sharp and crisp as the steel door lines, and the fitment needs work because of the thickness of the glass. The hood is bent, bowed and distorted, probably from the way it was lying on a pallet or storage shelving? He kind of regrets buying them now and even thought about going back to steel but he already has the money in them and he wants the early gasser look, so he is stuck.
I am with Dave when he says that no fiberglass is without problems. I built two 32 bantam roadsters, a 55 t-bird and a 27 "T" all for drag racing, all from different companies, and each of the bodies had their own problems, you just have to go into expecting that when you build a race car. I totally expect something better from a full bodied street rod company though.
John