If you are going to just race this vehicle you would be better off with a full manual valve body. With that it will only shift when you want it to. The manual valve body gets rid of all automatic function, so there is no other input to mess you up. At the very least a good shift kit could give you manual control, but the manual valve body is best especially if you plan to race a foot brake class only. We have found that most people once they start using the manual valve body call back later to see how much more it will cost to have a transbrake put on because the brake makes it easier to hold the car and reaction times are usually better.
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