Smaller Power steering gearbox

I tried researching that as well, only thing I can come up with is aftermarket units that are like 7 to 8 Benjamin's. They are supposedly based off of grand Cherokee gearboxes. (Flaming river, Borgeson etc.)

Now I did look at some of the Grand Cherokee's at the salvage yard and looked at some of the gearbox's. It is possible BUT (a big one at that) you will need to make (a lot) modifications to fit even then I'm not 100% sure it'll work right. I've been thinking long and hard about it too as those factory a-body gearbox's are not light either.