Oh man these are super easy to replace, esp if you have the right 36mm fan clutch wrench to undo the globes. Just put the truck in Low position, open the bleeder valve on all 4 globes and height sensor thingie. Close them up then turkey baste all the old fluid out of the res, dump a whole can of AHC fluid (2.5qt) and undo the globes and put new ones in. That's pretty much it, took me an hour to do all 4.
After i put them in, i started the truck and cycled it up and down a few times, then i shut the truck off, put it in N and opened each bleeder valve at the corner, some air hissed out followed by bubbles followed by solid stream of fluid so i just tightened it up. Did that to 4 corners and the height control cylinder thing.
I bought the globes from Japan, with the 20% off coupon, me and my buddy ordered 2 separate orders for front and rear, in total i spent $840 shipped for 4 new OEM globes. It took 2 weeks to arrive though, and front and rear are different part numbers so becareful when ordering. The rears are bigger than the fronts.