Jim, the tried and true 8" was also used in the Granada/Monarch, many smaller motored Torinos and many more misc Ford cars. Most 200cid 6 cyl manual Granadas used the 3.50/3.55 while the 250cid versions used the same 3.40 as the Pintos. That differential out numbered the 9" by a lot. It will hold up well on the street up to 400-450Hp as long as you don't have drag slick kinds of tires and continually do hard launches. Before you crawl under or buy a Granada rear end, a warning that some of them used that odd ball drop out the back, Chebbie type rear end. And, unfortunately there are too many of then that were 2.75/2.79/3.00 ratio:(