Hey, I'm in the process of breaking in my motor on an old bike of mine and she's running great. I've always wanted to get a shift kit for my newer mountain bike so I could put my motor on that bike. (I cant put my motor on my newer mountain bike because it has 32 spoke wheels and the stock sprocket won't work.) Anyways, what I want to get out of my motor is this..1) Able to ride from school, store, friends houses, etc.. 2) Fast enough to keep up with traffic around my little town (maybe 35mph ish) 3) Good acceleration 4) I guess just great overall performance! So what do you guys think? I'm not really sure of the pros and cons of either a shift kit or just a new sprocket. Which do you think would be best for me?