Its a simple combo that is very effective, but I still think it requires a little rpm to get it to work good. TR's by nature tend to like a little rpm. The car responded well when I moved the shifts points to 6600.

The 4200 converter hurt my car more than anything as it was always a struggle to get the car to 60ft in the low 1.50's. When I called PTC, he suggested something in the mid to high 5000 range to make the combo work better. So at the 4800 you will be a little better off than I was. Overall, I think you will like the combo and it will do what you want.