IIRC most makes and brands had this style rear end or Drop out pumpkin. My father and I found out last year that my 53 Ford wagon had a spicer style rearend and not the dropout pumpkin style that his 53 2dr sedan had. My 49 Plymouth has a dropout pumpkin rear diff too! I thought sweet an 8 3/4 but was told it wasnt so I probably cant get gears for it