I think the 33's do hurt you pretty good in the proformance department. These trucks need a little gear from the factory imo, wiht the 31's.

 

Lets not forget the 50+ ft./lbs. of torque difference between the two, the better torque curve of the 2v 5.4L, and the 4.10's (I think best they came with were 3.73's).

Would be a VERY interesting race... Would also be interesting to see a second race with 5,000 lbs. behind each truck.