I ordered the ford racing gears and traction lok from http://www.gefracing.com
They do not sell an installation kit for the 7.5" rear end. The shop that did my gears said that the beaings and what not are the same size as the ones in the 8.8"
Check with whoever is doing your gears. I also had to order the Ford Racing modified cross shaft from www.rpmoutlet.com
you can modify yours, but i just ordered one to save some time.
-Mac CAI, 73mm Mass Air
-Dual Flowmaster 40s, H pipe, 2.25 in pipe
-42% Underdrive Pulleys
-4.10 Gears & Trac-lok