What differentials were used in a '72 C20?

[unixadm]

I have a 72 C20 that was converted to 4wd. I believe it has a Dana 44 HD installed up front (8 lug) and a GM 14 bolt Full Floater in the rear with leaf springs. Was the 14 bolt FF used in a 72 C20? My buddy told me it had a Dana 60, but when my wheel cylinders showed up I noticed they were incorrect. So I did some research and found that it wasn't a Dana 60. That's what I get for not checking myself! Basically I'm trying to find brake parts for this differential, but everything I've found for the C20 does not fit this diff.

Thanks for any info.