i destroyed my b16 differential and bought a gsr tranny. well i ate up all the bearings in that tranny and was told i could not put the b16 gear cluster with a gsr differential. well i did in fact hybrid the 2 while also puting the gsr 5th gear in the b16 gear cluster. now having the best of both worlds. stronger differential and the little but better gas milage from the gsr 5th gear, while still having all 4 of the nice drag racing gears of the b16. to all who care i hope this helps if you were considering doing this.

 

Have you put it in your car yet? Let me know how it works.