Many later Supers had a transaxle with the 3.88 R&P which is desirable over the normal 4.125 R&P. Check the serial number.
AS 1600 3.875 Type I from 1973
AT 1600 3.875 Type 1303 and Verts from 1973
AU 1600 3.875 Type 1303 with LSD from 1973
A '70-72 Porsche 914 5 Speed (tail shifter) can be used too and more available (cheaper). It is a 901 trans just like the early 911/912. You have to flip the R&P, add a vent hole and swap the nose cone (and the shift linkage).
Do you have a VW title for both Super and Std beetle pans? That may be deciding factor in which you use as it may be difficult to register a pan without a title (dependent on state).