The rides been getting rougher and rougher, and found my XREAS is leaking at the central control module on both sides on my 06 Sport 4WD V6. 130k miles. I plan on ripping it out and therefor, need to replace all my shocks. Figure I'd do the coils as well.

After reading a lot (wow, this forum is an incredible resource), I think I'm going to do the 5100s with Moog Coils, with new KYB shock mounts, but am currently looking at the 4runner Moog coils (81045-back and 81090-front). I'm only on dirt roads/mountain roads occasionally but this is more of our play vehicle, so I'd like about 1.5"-2" of lift, and would like to level out the front which has horrible sag right now. My current plan is to do a Daystar 1.5" spacer in the back and set the 5100s on 1.75" in the front. From what I've seen, that (with new springs) does a pretty good job leveling things out. The Moog 4R coils have about .5" more height than OEM.

Now I'm wondering if I should do the Moog FJ coils (81081) in the rear instead and skip the spacer, which according to a coil rate chart that I found here, which have 1.2" most coil height to them, but also appear to have a lower spring rate than the 4Runner Moog coils. Any thoughts? I've read that the Moog FJ coils don't fit well in the rear and require modifications.

As I mentioned before, we mainly use the 4runner for going up canyon roads in the winter, fire/dirt roads in the summer for backpacking/climbing, and occasionally will take it to Moab on some rougher roads, but never do anything that a stock vehicle wouldn't be able to get through. Some extra clearance and a fresh ride is really all I want.