I have a 97- OBS truck. 7.3, 5 spd, 4.10, 35" tires. I am very happy with the combination. I didn't like the 4.10's until I put the tall tires on. Thing spun around 2,500 rpm at 70mph in 5th gear. It was good for country cruising though. Since I haul horses and other things I do work my truck. I...