Two names... Dave folts, and Gene Berg. It's not cheap (about the same as a porsche tranny swap) Folts' converts to a swing axle style and the baja bunch run's 930 CV IRS set-up. IRS kit's can be had at places like Appletreeauto in MI.
You can do this conversion "on the cheap" if you don't mind having your shift rod on top of the tunnel though shifting is a problem.
Here's a build in a drag ghia.
http://home.comcast.net/~mlawless29/type2trans.htm
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans
1962 SC 1776cc SP 944NA brakes, 993 wheels
VKG