Yes, that's who I was gonna say. American power train. They are out of Tennessee. Somebody did an article and install a couple years back. There prices seem good.
Your car will feel faster on the seat of your pants, but at the end of the day you cannot shift faster than that TF. You will increase the value of your car by about 10/15 percent.
They are fun and the pistol grip is a Wow factor, however I wouldn't want to drive one on a daily basis. been their done that. Not fun specially in traffic.