i think the locking it in 50/50 is by putting in certain resistors and tricking the ECU to thinking the fronts are slipping.
you can get a torque converter though and change the torque split to 50/50 in all gears if you want. i have heard that it even gets you 1sec quicker on the 1/4mile
[This message has been edited by Andrew (edited April 22, 2001).]