I finally got the X-REAS swapped out last week and the difference in ride quality is night and day. Again, I thought it was still working as designed b/c the truck handled well and nothing was leaking, but the ride was pretty harsh. Much, much smoother now and it handles better too. Bonus: the new front struts added about 1.5" of height at the fenders and 2" at the front lower skid plate (right under the bumper) that leveled out the rake nicely even with the .25" the rear springs added.
Here's the new setup:
Bilstein 4600 shocks and front springs from a '15 Tacoma TRD Offroad ($130 from local Craigslist)
2007 FJ rear springs ($70 shipped from a FJ Cruiser forum)
Also needed a 22mm wrench to disconnect the X-REAS fittings at the appropriate place (not at the shock!) so that was $7 at Home Depot.
I bought new top mount nuts and lower bolts, washers, and nuts from Toyota for $42 including tax but returned it all as my original hardware all worked with the new gear.
Scrapped the old springs and shocks at a local yard and they gave me $4.20 for them. Woo!
Before
After
Happy to answer any questions, and I also put together a set of PDFs from the Factory Service Manual that provide a lot of useful info including torque specs, directions for removal of the entire system or shocks only, and so on. As with anything, this is for reference only and it's your responsibility to use whatever is helpful to you in a safe manner. Here's what is included:
Member [MENTION=279296]jcaino[/MENTION]
thoughtfully linked the files on his website so you can get them there or PM me your email address to receive a zipped folder.