[dicklague]

You DO NOT need a G50. the 915 is a very good trans.

I have mine working extremely well.

I agree to start with linkage and shifter. I like the new couplings whether you choose Wevo [which I have] or other brands.

If you have not gone through the bushings in the shift road and coupler do this first.

I lived with a "crunchy" 915 for years and finally was forced to have it redone. I love the result, but it was and extensive rebuild that included bearings, synchros, ring and pinion etc.....and the Wevo internal shifter gate which is expensive, but excellent in my opinion.