Thank you for asking here.

Okay first it is the post 5/73 Super that has the later suspension, this was one of those mid-year changes. However, I usually label the late as 74-79 and the early as 71-73 to cut down on confusion, although the 73 did have the late suspension for a few months.

I don't know where you have gotten this information that the mounts are in different positions because they are not. The mounts, although a slighty different design and look different, are the same dimensions. The mounting holes are located in the exact same place on the chassis. The later mount does have the extra holes on the bottom that are unused. The top holes are the same as the early mounts. I have never seen the bottom holes used and assume they were put there by VW for perhaps a later suspension design or more adjustment in the case of chassis damage.

What does affect the camber is the design of the 944 spindle that gives 2 degrees more positive camber. There is a new product by www.TopLineParts.com called Camber + that will give more camber adjustment.