I used a power steering kit from CPP for my 51 panel.
Also, upgraded the brakes to discs at that time.
No drama on the install and steered like a Cadillac. And, stopped on a dime.
I'm up for the disk brake swap but still working out details. Since mine is 8 lug its more of a challenge. Looking at probably using 88 up rotors on modified factory spindles. That will be my next challenge. At the moment steering needs to be decided on to determine which headers I use for clearance.
I like the looks of the CPP kit but I have access to 2wd truck steering box for the other swap.