Ok i have a 1989 toyota pickup 3.0 v6. It has 205,000 miles and i have factory 4.10 gears and im running 33x12.5 remington mud brutes. It currentky has torsion bar crank 2" blocks in rear and a 3" body lift. I have a 4" trailmaster which i will soon be installing and getting some 36x12.50 tsls or q-78 tsls. I was wandering how will it hold up for a few months without gearing lower? I have planed on getting 5.29 gears to bring me close to the near stock range. another question is what to expect to pay for labor on a gear swap. I would do it , but i dont have the tools to set pinion depth and backlash. any help is apreciated.