I'm looking at a 1975, actually 09/75 build so I believe that makes it a 76 model. Anyway, the owner posted a picture of the option sticker under the hood. The rear end is listed as a code number AB2- R/A chry 8-3/8. I'm assuming that would be what we commonly call an 8-1/4, not an 8-3/4? Would that be correct?