i got 3.92 no probs here might go with some 4.56 also one day...after some other mods of coarse

 

I have the 373 lt slip in my 2500, on the high way, my truck is a rocket, with the 6sp manual, truck is to much torque for city driving, the 410 is the better choice for the mega cab, its not built for a high, high way speeds, a 410 will tow better and on the higway at 110 Km you may 400 to 550 revs over a 373, not a big deal...

 

i can't wait to get 4:11s in mine, 3:55's and 33 inch mud grips are a dog, but i'm still faster than any gasser truck in town. i really just want em for the torque when i tow stuff and for all the mountains i drive over here.