HI
I need some help i want to convert my 69 mustang rear end into a posi traction. does any body know which car came with a 8" rear end posi or 9" there is a sale at a huge junk yard by my house i was thinking of going there and see if a can find one?.

any help with this ill really apreciate
thank you

 

There is a lot of information in the FAQ section about this topic. I think it even lists some cars. I would check there first.

 

There have been probably thousands of posts like this - check the Search feature or on google. Basically though, a lot of 70s cars have it, but more in-depth articles have been written.