A spring over in the rear should do it, (If you have the leaf spring rear suspension) no clue if there are any off the shelf solutions on the front. There are custom spring makers that can make longer coils if you have coil rear suspension.
I think Old Man Emu has Montero torsion bars, but I think you might gain 1-1/2" with those at most. Maybe converting to a solid axle up front is the only semi-economical way of gaining 6" lift?
A forum community dedicated to custom off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more!