Reworking an 8 1/4 and can't find ?

I have a little info in my 8.25 built to race thread. I upgraded my axle shafts to the larger 29 spline from 27 spline. And got a new track lok with 4:56 gears. Mine came with 11" drums added by someone off a larger car. All my parts where from doctor diff. Nice guy and best prices I could find.