installed 4.10 gears and what a difference

[Pont406]

I installed 4.10 gears in my 69 c-10. My neighbour across came over and asked if I want to try and run with his late model 2500HD duramax. I followed him. He was blowing heavy black smoke. Same thing happend. I could not hook up. We tryed from the roll at 15mph and I got him by half a truck lenght easy. After he told that he installed a power programer. New gears woke up my truck. It feels like a tottaly different truck now. I will get a locker sometimes next week. I am trying to see if I have enough to walk away from2008 dodge truck with 5.6 motor or should I do some more work? Thanks