Sheesh . . . if you are thinking Ford 9 inch, then why not go with Mopar 8.75 ??? There were many made for your car .
Probably because the 9" is about 10 times stronger. There are alot of fast cars with 8.75 rearends but alot of them break too.
Not stock they aren't.
This is a good point. A 9" is a good rear end, but mostly because the aftermarket has offered them a lot of support. In stock form, they are a far cry from a Dana60, which can handle just about anything in bone stock form.