I had ruled out the 04's because or the 4:10 rear end. I've also discovered there aren't many trucks to choose from where I live. I'm going to drive an 04 with headers this week. If I don't ever plan to drag race the truck, are the 4:10's acceptable? I'm thinking it my be like the old Vipers with 3:08's. 3:08's weren't ideal but the car was still fun to drive.