If you want a mild setup with a great ride for 31s or 33s you will not regret the OME suspension. I had it on a 4Runner just like yours and it was great. We had a detroit locker in the rear, some decent rock sliders and some skinny 33" BFGs and my wife could absolutley wheel circles around most of my buddies with way bigger trucks. Not huge flex or really very tall but the shocks are perfectly valved for the springs and it feels really well balanced overall.
-Also add poly sway bar bushings... They are cheap from energy suspension and really help eliminate the nasty body roll that the 90s 4Runners have.
-The ball joint spacers, while not really necessary are a good enhancement too that adds a bit more wheel travel and I would also find a idler arm gusset if you plan to wheel it or the slight bit of extra travel from the ball joint spacers will tear it up.
-The OME heavy rate rear coils will be a good match for ride height if you use the ball joint spacers, the mediums if you don't.
And really, seriously, add a rear locker too.
I tend to think a setup like this would probably be better all around for most people who wheel these trucks on moderate to difficult trails. I have a 1st gen with mild suspension, 31s and lockers that works better than most trucks around here, of course I have a way bigger truck too because, well, it's fun to have 3 feet of flex and massive low gearing...
