FTD: The front belt can be run very loose, especially in stock. Instead of having to go around small drive pulleys, the belt goes around the two large diff pulleys. The extra teeth and larger pulley means less tension is needed to keep the belt from skipping. Some people run the grey belts, which are supposed to be freer (and some will swear by them), I didn't notice much difference between a greay belt and the stock belt after soaking it in WD40. Its your choice.
Inboard toe adds more traction to whatever end of the car it is on, but if the car is hooked without running the inboard toe, adding it will slow the car down a couple of tenths (so it has been said). If the car is loose, and nothing else seems to be able to hook the car up, the inboard toe usually will, in which case, the car will go faster. It's just one more adjustment that you will need to experiment with and see if it suits your driving style...Hope that helps.