No mention of a posi on the window sticker. My friend's uncle has a 68' GT500 with a factory 3.50 geared open rear. It's surprising how many rolled off the assembly line like that. (One of his neighbors has a 68' GTE Cougar with no posi also.) I remember racing the car back in HS when I had my 69' SS 396 L78 4 speed car. We were both on street tires, but my car served up a nasty ass whooping every time.

Wow Eric ,I love that thing .

One very cool car