The repops always require body work, although the metal is getting better than it used to be it is still much softer than NOS or original, it does not have near the temper the, even after being weld on
Lap joints are easier than but joints.
the problems are: with a but joint they must be welded solid and ground as flat as possible or they may show even through the filler when heated in the sun, a lap joint van be spot welded, it will show if it is direct sunlight and also has the potential to hold water
If you have some one to repair them and you trust them to do it, fix them
