I wonder why he keep moving? He's been in 4 locations that I know of. If you get the owner, he knows his shit. But he's had some flunkies working for him in the past. I think his prices are a little high, but like I said, if you get the owner, he's nice enough and knows his Jeep info.
To be honest, a Power steering and Power Brake conversion isn't all that involved. Have you considered doing it yourself?