Steering box rebuild

Yes very easy and effective. I went to the dealer and got a pkg of reaction springs. I put two in right away, and several days later added 1 or maybe 2 more.
I have a very small steering wheel with a thick rim. The new set-up takes more energy to turn the wheel, but less than a manual box, and has the faster 3.5 turns lock to lock. And the on-center feel is better with less wandering and slightly later boost. I really like it.
The FSM lists several special tools but the only tools I needed were a BFH and regular wrenches.
The trick is to not lose any parts; I worked in a low-walled tray.
There is not much in there that wears out, A rebuiild kit covers it all. I doubt I spent $25 in 1998.

As to my small diameter wheel;
it is about 12 inches. I think the oem was 15ish. That makes every revolution require about 10" less palm travel. On 3.5 turns, from lock to lock, that comes to ~35inches saved, or 20%. That's a pretty big deal.
So much so that the Federal Pump could not keep up. I swapped in a Saginaw, which seems to be doing ok.