well I got new clutch packs put in (paied prices from FORD because it was a last minute suggestion, so thats a ripoff) I would deff suggest that as well, you can even get heavy duty ones. Anyways the best shop in town that just does rear ends did it (so it wasnt cheap) but I paied like $575ish? Canadian thats not counting price of gears. So buying the parts off the net or from autozone etc im sure you could could get them installed for like $300ish.
A guy on corral said he'd do it for $160+ 30 for a rebuild of the rear, I already got gears for $115 and am just getting that dallas speedo recal. I think i'll go with him as his price seems pretty good.
I was just going to have the guy rebuild the rear-end and make sure everything is set up right when he does it, I was going to do it myself, but don't have any access to a lift, and am not going to spend another couple of hours under the car doing this in my driveway when I can save my self the time and trouble for a mere $200. But I will watch him do it so i'll know the procedure for next the next mustang I do.