Question about 944 Arms and axles

[Wally]

Welcome! Where are you from?

Friend of mine has a rail (fugitive iirc) too with 2,4 ltr type 4 for the road. Crazy machine and quick as h*ll round corners too.

Originally Posted by evilC

When I fitted the alloy arms to the bug with a standard IRS box all I needed was the 944 standard length driveshafts that do have a reasonable amount of float built in. That float is around 1/2" so you may get away with them if the bus trans output flanges are not too much further apart. It somewhat depends on the amount of suspension movement you expect.

I agree. You can also use the Vanagon T3 axles, they are virtually equal length and also have the 100mm CV's on both sides.
Only if you retain the T1 gearbox will you need to swap CV's (not all fit on all axles) or swap the flanges on the tranny for 181 flanges that have 100mm output sides.