I found a steering box off a mack fire truck and mounted it in front of the axle about where a freightliner or pete is mounted. I got a air compressor off a later motor 675? and a vaine pump that fit on the pump. I had to make an extention on the oil dipstick. I modified the adapter plate between the pump and compressor. I then got a steering colum off an old r model and used the spine for the steering wheel so I could use a latter wheel. I cut the spline off and welded it on a dom tube after some lathe work i made a shaft that i could slip a yoke on that i took off a volvo conventional i had to modify that too. I then made a new outer steering colum out of dom so i could use the spring preload tensioner like mack did. I made a bracket that i mounted the oil tank on between the injector pump and the inner fender. I have no idea what the pump was on but it ran the wrong direction so i took it apart and reversed the vaine center housing, I got a nice heavy front bumper and made brackets to mount it so i could spread out the extra stain on the front frame end. The bumper ended sticking out about 5 inches more then the one that was on it, i then covered the spread with a sheet of aluminum plate. that stock steering box assm. is damn heavy so if you go about removing it be real carefull i did it buy my self and i had my hands full. I don't think this job is for the faint of hart U need a lathe milling machine stick mig tig welder torches and a plasma band saws another words a complete machine shop right next to the truck it helps. In the end i can use 2 fingers to steer it setting on the road. It was quite a pain in the butt to do but i enjoyed doing it. If i can talk my cousin into showing me how to put some pictures on this sight i will be more than happy to show the setup. I know one thing i can do fabwork way better than i can spell. I hope you can get some ideas to help you out. Happy welding. O mack did have a b model power steering set up they sharred it with brockways I saw one on a brocky up in n y.