Now you know where to look for the valve! Wrangler, just remove the high pressure line and seat and use a magnet to pull it up out of there and put it in yours. It should do the trick. I know I looked the spec up in a 95 TSM so it should hold the same at least 91-95 probably clear up till now. Four cylinder may have yet a different valve. I don't think the TSM mentioned egine size though.
Wait -- are you saying that setting P.S. pump pressure is as simple as that?! You just lift it out with a @#$%! magnet? And with that you can tune the amount of assist?!