"Mad Max" is going from an auto to a manual, hence no clutch stuff from the old. I'd almost say see how a NV4500 belhousing and all would fit. I've been told that starter spacing is tight if you go with 2nd Gen stock stuff, though. I know lots of guys have used the AA adaptor/ bellhousing to go between the Getrag flywheel adaptor to the NV4500.
The Getrag has an adaptor between it and the block. The block is actually very narrow.
You can use a Sachs clutch (actually preferred). Hafta get different cross member, shifter, slave cylinder assembly, etc. You would actually be better off with the Getrag. It is all stock for your year, and from what some guys here have said, is no worse than the NV4500 (remember, 5th gear, and oil is hard to find for the NV4500)
DP