Contact Randy @ www.stangerssite.com
He rebuilds Ford PS setups for a living (does most work for mustang shops IIRC) and he knows more than anyone has a right to know about them. BTW, as per his tips, use the right setup; as MAYBE 2 cars shared the same parts, and a cobbled together setup can steer like crap. A full PS setup should be in the $400 range, and you can often find them as a whole. If you want it to be really easy, call Perogies, bend over, and have that credit card handy!
66 coupe 5.0/T5, home-brewed power 4 wheel disc setup, 350hp+, looks like it belongs in 1968