I recently did a z32 gearbox swap in my sr20 equiped s13 using a mazworx adapter plate. I completely overhauled the rear suspension and drivetrain as well using a r32 gt-r diff housing with cusco adjustable 1.5/2 way lsd and r32 gt-r axles and hubs.
Doing measurements I found that a stock z32 (2+2) driveshaft has exactly the correct length. Because the driveshaft support bearing position is completely different opted for an off the shelf aftermarket 1 piece z32 driveshaft, fits perfect.
diff/driveshaft connection on the z32 and r32 gt-r is exactly the same and a lot beefier than the s13's, see below for comparison:
r32 Gt-r diff, axles and hubs
s13 rear diff housing fitted
Ready to go into the car
