I haven't purchased from them...but I did want to convey something I read in an article about an entire tilt-front-end that someone was installing on an early model Ford truck.
Apparently after they had everything setup on the truck, the lines weren't matching how they should have. They called the manufacturer, and they recommended removing the metal braces, and cutting the fiberglass piece, getting it lined up and then re-glassing it.
Sounds pretty scary when you're paying $600 + for a nice fiber piece.
I could be wrong, but it seems to me that this is the nature of the beast when you are dealing with companies that manufacture this stuff.