ive got a 17t double in my ss now. Im planning to get a 7 cell 1900 nicd pack. Ive got a duratrax intellispeed esc, and bearings. was happy with this motor, but i am hearing wierd things about how a good 27t motor can exceed a 17t in performance. Does anyone have a link to one of these motors? and wat should my car be geared?