Rear ends

which one of these rear ends would fit in my 69 torino gt. or which one is better
9" Ford used 3.50
28 & 31 spline 3rd Member

9" Ford 71 Torino core complete
2.75 w/28 spline (open)

So you finally migrated to the ford forum, huh?
Also, I have no idea what your talking about...

The 2.75 will give you better gas mileage, kill performance but give you a good top end (highway cruiser.). The 3.50? (maybe 3.55) will get you out of the hole fast, suck gas and kill your top end. The better of the bunch (if you can find it would be a 3.25 trac-loc.