This last weekend I scored a IROC xh steering box off a 91 camaro for 50 bucks. It was a straight across swap besides ps line adapter fittings, 78 and 79 cars have flare fittings and 80 on up use metric o-ring. I also had to ditch the camaro pitman arm for the bu's. My car is alot more fun to drive now and doesn't feel like im steering a boat around corners. For anyone interested the xh box is 12.7:1 ratio vs (correct me if I'm wrong) stock 16.7:1, its also alot higher effort and is 2.5 turns lock to lock. Also, I got the fittings from Lee steering in cali. They were great to deal with, provided me with lots of info and had my parts to me in 3 days.