When I first put a Pontiac 350 into my 1981 Malibu wagon, the crappy power steering was leaking. It was that cheapola snap ring cover job [605?]. All I had was Firebird power boxes that I could use [800?]. But the hose fittings were totally different. In a pinch I used a manual box that I had. The Pitman arm on a manual box is the same fit as the 605 box, so it was an easy swap. What a mistake. At speed, there was not much difference. But parking and any slow speed maneuvering was a chore. The wheels must be turning to take the strain off. Many moons go when I drove VW bugs, it was normal to have to gorilla the steering. But a G-body with a big V-8? Yikes! That got old real fast. I eventually got the proper pump and hoses to use the Firebird box and I found the right Pitman arm at a Junkyard.