I thought it had 4:10's, but it could have been 4:30's as Kyle said. Mine was a turbo though, so the truck behaves differently than one with a normally aspirated motor. Less bottom end torque, and more top end. Mine with 31's and the auto was a ***DOG*** off the line. 0-20mph in 4-5 seconds! But with the 5-speed it would pull off the line well, then take off when the turbo kicked in.

IMHO, a 5-speed, 4:10s and 31's should work just fine.

Good luck,
Brian.