Drove it around all day yesterday. Even picked up a truck load of mulch to do yard work with. The tire shop had it inflated to 45 psi so I aired them down to 30 psi. Smoothed the ride out considerable.
I have learned a few things.
37" tires don't balance with lead weights. I will have to run 10 oz of airsoft bb's in each tire and they will always be balanced (wear, mud and so forth).
It will be mandatory that I upgrade to the the tundra brakes. It takes a lot more brake force to stop now.
The speedometer is off by 15% (just a guess), but when my speedo says 50 mph, the droid app says I am going 59 mph.
The stock 3.4 can really push these tires. I can spin tires (2wd) on the street and all four wheels off road.
I am thinking about weld nuts on to the lower ball joints to limit the steering. This will prevent the tires from rubbing on the the frame.
Ground clearance is awesome now. I can clear concrete blocks. I can change the oil with out ramps or a jack.
The only thing i need now is a lunch box locker.