Paul the car is very much over geared in my opinion. The ratio is 3.07 as past cars were but, the tire size increased 1.3 inches, and that is a trememdous amount. Strangley enough the car does better than the former models. The 50 extra horses and the torque increase compensated a little. Not enough, yes a 3.54 or so would be great. I spoke to Jerry at unitrax about it and he said he is checking to see if there will be any problems with the computer. The clutch is a must to upgrade also. It won't last no time in this car with the gearing so tall, and the extra torque. That is if you like to sprint around in the car from time to time. I do, and I burn on the clutch every time I do a semi hard launch. I don't do to many of those. I like to punch it from a roll, gets the same thrill and saves the car.
And yes the car does have a torque biasing differential. That is great. I love the control this car has when you get on it hard. No comparison to the old Detroit trac loc. The car has in it what is similair to the Detroit True Trac, that is sold by Unitrax. I don't know why others that have these cars don't notice these needs and changes in this car. If they didn't have the former model than I guess they have nothing to compare it to.
What a brake system, Wow, never thought they would do so well.
Skip White