I have had nothing but problems with aftermarket sheetmetal from everybody I have delt with. the big problem is no matter who you buy from there all manufactured by the same co's. dynacorn, goodmark etc.... I have even bought the same parts twice with the promiss that new tooling is now being used. for example , inner left rear quarter panel for 71 elco first on was so far off it wasn't usable, the second one doesnt match the first one and both dont match the original. ex#2 bought both rear quarter panels for the same el camino. right side was off in every dimension, big time when I went to hang it I hand to stop before I stomped it into the floor. I was able to find a set of n.o.s originals , fit perfect, took a tape measure to both and found fuel door on left side off by 3/4 in in one direction & about the same in the other. BOTH QUARTERS WERE NOT EVEN CLOSE. these were made by dynacorn . your not alone my brother!!