If you use the 90 tranny and don't want to get a 22 spline xfer case, you can simply swap a 23 spline output shaft into the tranny. It's only held in with a spring clip on the viscous coupling. Pop those off and swap the shaft.
The 90 style tranny was built up to June of 90, if your car has a build date after that, you've got the 23 spline 91+ model.
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2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie
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