Don't put yourself out calling, I was just curious. I've been looking for someone to give me a straight answer about towing my truck 4 down. Nissan won't let you speak directly to an engineer and all of the Nissan mechanics I've talked to just quote the manual. Anyway, I saw the truck and stopped to talk to the mechanics and in the process found out major mods were in the works. I remember seeing a thread on the rollbar he had installed and thought I'd see if he was still on the board. From what I was told they were swapping the entire drivetrain. Dana's front and rear pushed by an LS1 with an AtlasII transfer case. Cost has gotta be more than the truck itself by the time it's finished.