64 GMC Rear Drum Question

[markreed]

I am working on a 64 GMC 2wd 1000series. It originally had 4 wheel drum. I just finished up the front disc conversion and I am working on re-doing the back drum brakes. I have gone to autozone and O'reillys and neither carry a rear drum hardware kit. I can only find for the front. I know both drums are 11X2, so I am wondering if they are the same?

If anyone is sure or has done this, any input is helpful.

Secondly, if I were to want to change to a 5 lug from 6 lug, what all is entailed since I will already have the rear apart...?