sebrings and fox body mustangs won't work on the 63-66 bodies without a lot of re-engeneering I have tried. the stroke is just a bit off and the pivot point on the stock unit is on the bottom while the sebring(late model mustang too) is in the center-ish of the cylinder. the top eye mountong location would have to be another 3 inches in-board for the shorter stroke(more powerful pump then needed) to work and the pivot point would have to be totally beefed up in the car due to the shorter stroke. I'm still looking for a replacement type like the early chevies but have not found a good substitute (yet) none of the later model cars I have looked at in the yards have a bottom mount or a long enough stroke to work so far.