how do they fit? has anyone tried them?

I dont know what car you have but I can tell you about my limited experience with aftermarket sheetmetal.

I have a 71 in the body shop right now. So far we have replaced both rear quarters, right front fender, hood, and the rear window filler panel. Everything except the filler panel was from goodmark. Everything fit like a glove. My body man said that the quality of the fit and thickness of the metal was very good. We did notice some small surface imperfections (like very small door dings that are hardly detectable). Probably from dirt in the stamping mold.

Listening to others, it seems that goodmark has a very good reputation. Thier stuff is availible thru most of the big suppliers to include Ground up.

Clark

I havn't seen them installed, but I have seen them side by side to some originals. The metal thickness is perhaps slightly less on the repros but they did look excellent. Wasn't thinner a good thing to old drag racers?