On the Challenger right (pass)side they had a stamping issue that made the lower body line face down instead of upwards . It may have been fixed by now but if not any body man can fix this easily. You may also have to add the cut out on the top plate for a 71. Fit up you besels as well befor you paint them as this area will require some tweaking. The body line around the wheel well fade out on top (just like the Goodmark quarters)and you have to drill the holes for the front fender inner seal and headlamp springs. I got one of the first sets so some of these problems may have been corrected. Any GOOD bodyman can make them fit very well.