Originally posted by rcosmax
That is what i had thought but.... the optional 24tooth belt (that i have in my hands) is nowhere close to being able to mount on my car even with the 24tooth pulley it is way too long and the belt touches itself and still isnt tight. Maybe I am missing something but I can see no way of making it work.
I am confused on this one. 
How many teeth are on the belt? I think the stock one is 384T and 387T should be used for the 24T pully. However, there is also a 389T belt and that would certainly be too big. I was at a model shop a couple of days ago and I was surprised to see so many different belts sizes.