I have a big gap in my steering (71 Mach1 with powersteering), and i have tried to tighten it up, but the gap is still there so it must be worn gears, is there any company that sells a restoration kit for those ?
Old cars tend to have alot of slop anyway but, rebuilt boxes are availible check out: www.mustangsplus.com
mustangs plus sells rebuilt original steering boxes while flaming river sells brand new boxes that are supposedly even tighter than the rebuilt boxes.
you sure its the steering gears? does the steering wheel turn slightly to each side without turning the tires? This is normal for an old mustang. if its excessive, it could be your tie rods or idler arm. have someone turn the steering wheel a little side to side enough so that the wheels dont turn and watch under there to see where the slack is. watch the tie rods.