Please Help Me!!!!!

Hi All
I need some help to finish my BBP upgrade. I just bought a 8 1/4 355 sure grip rearend to put in my 72 Swinger street car but I need to get backing plates, brake hardware and drums for the rearend and I have a few questions as follows;
Will my 8 3/4 e-brake stuff work or do I have to get from a donor car?
Will my backing plates fit from 8 3/4?
What donor car/trucks can I get the parts from?
Thanks in advance for your help.
Dwayne
Author: admin