Start by checking the VIN with Toyota to see if the head gasket recall has been done, if not: Free Headgasket Job!
If it has, find out when. Watch the HG on that engine, it's a good engine, but it does have issues with the head gaskets. Don't ever let it overheat, and may I recommend a Failsafe thermostat.
well it runs ok it's a little sluggish when it starts off but then it cleans up.make sure it runs well before starting mods...
first armor it up
tires
drivetrain options(gearing, tcase, SAS)
suspension lift...
when wheeling, take the top off as weather permits, much less top heavy and much more enjoyable