Gen2 Barracuda Tail Lights ... All the Same?

This might help. The back of the housing has four mounting studs. The mounting brackets inside the trunk are easily bent to adjust the alignment of the housing. One other thing might help is the addition of the housing gasket which can space the housing away from the sheet metal a little bit. DMT makes the t/lite gaskets but I prefer to re-use the originals with a little bit of string caulk.