I love my tunnel ram, you just have to make sure the rest of the car is setup for it. They don't start making power till 3000 RPM. Living that high in the power band isn't easy but it can be done. It would be much easier if it wasn't an automatic.
My car gets so much attention and its mostly due to the Tunnel ram.
I drive it on the street and its does a pretty good job. I do need to do something about the rear gear ratio. Its not right and I'm not in the right RPMs like I should be unless I shift manually.