[spuggy]

Albins make a taller (10:31) R&P for the G50 - CMS carry it; I considered it.. It was $3000 US at the time, Factory G50 gearsets are $900 per gear (1st involves re-welding the shaft as well).

Last I looked, core, non-broken G50/50's were reputed to be $10K - if you could find one. Good luck with that, they didn't make many, and most are either in the original car or already in an Ultima or GT40 rep...

I think you have to figure a used transmission with any mileage as "suitable for rebuild", especially for high-power applications. The G50/01 with 100K I used ate about $3000 worth of factory wear parts (bearings, bushes, seals, synchros etc) before it got anything trick - and it came out of a great-driving car (shop I bought the box from had been looking after it for 10 years) that got hit in traffic.

After the tall 5th I had in the 915, stock 911 G50 5th was also WAAAY too buzzy on the freeway.