Spicer 5752C five speed, is this an oddball transmission?
 

The last piece of the puzzle I'm missing to get my '69 GMC 8500 winch truck together is a reversible PTO. I've been searching the internet and various PTO catalogs and I can't find any information on the Spicer 5752C five speed non O/D transmission. I would think a PTO from a later model Spicer five speed would work, but without finding one to compare the drive gear with I don't know for sure. If anybody has any insight to this I'd appreciate it.