Unless you have a bus box you are not going to get a 4.56 ring gear. If you are running a type one say in a mid engine like my brother or my jsc chassis im building eventually you will have the choice of a 3.88, 4.12, 4.37, 4.86. If you run a bus box you have 4.12, 4.56, 5.13 I think, and like a 5.47 or something huge. We have a baja with a 5.13 and it was way to short. We changed yhe ring gear and changed gears. A good turbo sand car tranny for a type one, is a 4.12 or 3.88 because they are stronger, then run a super beetle first because they are shorter, spend the money in a second gear like erco, run a short third like 1.65 and a short 4th like 1.31 short but fun. Like a sprint car