Just went through this about 2 weeks ago. I have posted some info on my repair (you can search by user name) the lower bolts on the steering box are a major pain. I ended up taking the bolts out of the inside of the fenders and then the lower body mount bolt that holds the frame to the body under the front bumper. This allowed me to raise the radiator and grill enough to work from the front. The ONLY way I could get the bolt loose was to finally use vice grips. I went ahead and changed both hoses since I decided I didn't ever want to do it again. Good luck bleeding the air from the lines. I still can't get mine to work 100% right....but I haven't had much time to work on it lately. Do the job yourself and save about $150-$200 for other mods.
'86 CJ7 I-6, 5 speed, 33 Pro Comp, BDS lift, CD, Hardtop and Doors, 4X Dr. Rockers, 4.88 gears, ARB Air Lockers front and rear, Dana 44 rear, 63K original miles...very sweet rig.