Which lift would you recommend, 4" or 6" for a 77 longbed pick-up? What brand do you prefer? Right now it's on 2.5 Ruff Country and 33's. I am in the market for more lift. This truck will have to be streetable and handle moderate difficulty trails. Seems like once you get over a 4" lift you really start changing things in the steering, driveline, center of gravity, tire size, trimming et. Any other guys out there running the trucks?