Ok so I did a search and wasn't able to find a thread like this so I'll start one. Can someone tell me what are the differences in all the different A-body spindles? As an example, I know the disc and drum spindles are different but are the drum spindles different other than the upper BJ hole size? The reason I'm wanting to know is I'm rebuilding my front suspension and eventually I'm gonna swap to BBP discs but for cost sake I'm staying with the 10" drums for the time being. To save money later I was wondering if I could use my 72 10" brakes on my 75 drum spindles and use the UCA from the 75; then when the time comes to swap to discs I can just swap spindles and brakes. Would this work or will the 72 sbp hubs/bearings not work on the 75 drum spindles?
