OK, I've stayed off this thread, but now, I will give my two cents worth.
Now here is something a lot of people don't know, as I have not seen it mentioned in this thread.
When you are stopped and you want to get going again, rather than leaving the car in Drive, flip the shift lever to the right manual position, then while still stopped, push the lever forward into 2nd. When you start moving, you will get less torque and more traction, vice using 1st. Works great. Don't know for sure if the 3.8 with the Aisin Transmission works like that, but thats how the 4.6 with the ZF Transmission works.
As for traction while moving, in curves, or stopping at stop signs or stop lights, you just have to drive slower, Matter of fact, you have to do everything slower, gas, brake, steering. You can't change the laws of physics!