Hey, i'm wondering if i can switch my 2 speed transmission with a single speed on my tornado bb? If so, can it just be switched out, or will i need extra parts? also, which gear does the single speed use? If i can't then that brings me to my next question. There are 2 gears in the 2 speed on the tonado bb. One is the 47t. Which is the other? Thanks for the help!