Yes, like many others I can recommend the OME suspension kit. But choose carefully which version of the kit you get, and I highly recommend getting the complete kit, not mixing it with different shocks or springs.
I put OME full kit on my 1999 Tacoma xtracab v-6, and at advice of an ARB tech I stuck with their "light stock" OME package. It resulted in a little over 2" lift above stock height, I carefully measured before and after. My stock suspension had 85k miles on it at time of swap, I have no winch, etc. Stock truck, stock 31" size tires. (nope, I would not recommend upping the size either unless you really need it)
The heavier springs are where many complaints come from, and I was told by ARB that unless I have several hundred pounds of permanent gear like winch, aftermarket bumpers, etc, stick with the light stock OME kit. Otherwise your front end, they said, will ride too high, too stiff and you may have CV axle issues.
I love the ride, it was a huge improvement over stock system. My stock springs had 86k miles on them, shocks were street crap.
I also probably recommend a drop dif kit, I'm about to do that as I did notice grease seepage in one CV after the suspension change. I think they are showing signs of strain with the constant, steeper angle. Tacoma's don't like too much suspension lift.
I also bought the full kit because they were designed to be used together. That's very important when it comes to mixing and matching springs and shocks. It's nice to have them get along with regards to suspension travel length, height, etc. I have stock upper control arms.
Dunno about the 4runner kit, but the OME kit for Tacoma is designed with a rear rake in it, which helps keep the rear boosted a touch for load leveling. I'd definitely boost the rear by some means if I had a 4runner, with its inherently heavier back end.
I had airbags long ago on the rear of my truck. I will never again use airbags. Full axle articulation tends to crush them, shorten their life. The local shops I talked to never recommend them, telling me what I found out quick-- they just don't last if you use the truck off road, and the problem is made worse if you don't keep pressure in them constantly.
hope this helps!