Another thing I've noticed is that I haven't seen anyone with an upgraded torque convertor. This makes a BIG difference in automatic cars at the drag strip. Much better 60' times which equates into faster ETs. I don't have any experience with torque convertor sizing in Supercharged cars, only turbocharged, but I would say something around 2800RPM should put a high 11-sec car into the mid 11's.