John,
All the factory parts are retained; the box, the tie rod, pitman arm,etc. The p/s kit consists of a control valve that fits on the pitman arm end of the drag link, a frame anchor bracket for one end of the assist cylinder, a bracket on the tie rod for the other end of the assist ram, and pump and hoses. Here are a few pics of the set up on a 1940 International pickup with a 400 sbc. Not a tidy as on a Chevy but gives one the idea of how it works.
The control valve: two upper hoses are pressure and return from p/s pump. Two lower hoses go to assist ram.
[img]https://i.postimg.cc/Mch3T92z/straight-axle-p-s-003.jpg[/img]Control valve threads onto Chevy drag link so had to graft threaded end to International drag link (it's a farm truck)
[img]https://i.postimg.cc/Cd67LvjX/straight-axle-p-s-004.jpg[/img]Tie rod mount for ram which is hanging down below tie rod splice. Chevy has an eye in the power steering tie rod. Done this way since truck is doing very heavy duty farm work.
[img]https://i.postimg.cc/RWPVjHr7/straight-axle-p-s-002.jpg[/img]Ram bolted to tie rod. Has worked trouble free for 15 years.
[img]https://i.postimg.cc/2Lv7tYVW/straight-axle-p-s-005.jpg[/img]
