I have a 06 T2000 with a at c15 435hp 10sp 336 rears 22.5lp tires, i am being offered the chance to swap the tranny for a 13 speed. Is it worth it?
ABSOLUTELY. At least so far...I have been driving a 13spd for the last three weeks and it has been an improvement. I think you will notice an increase in mpg and also it will make mountain driving a lot easier. I say upgrade...