do you have to run the 13.5 on the gtb, or can you run it on the ss and ss+? also, what differences would it make running it on the different escs, that is, if its possible? would running it on the gtb actually make it faster? and would running it on the ss+ make it faster than the ss? actually, whats the differences between the ss and ss+? i have an ss+ and my 2 other friends have ss'.