yeah a lot of guys run that rear sponson, honestly that timing advance is easy, cheap and really wakes the motor up on the low end. definatly the plate and grate are a neccessity. My buddy went with R&D timing advance, and it worked out real nice. I heard there is a way to do the timing advance without spending a dime, but not sure how. We're running the R&D pro stealth plate also, and it sticks. im not sure about the temp sensor trick, ive heard of it too but dont know anything about it. Flame arrestors are nice too, but require re-jetting, which is easy but you gotta spend some dough. Id call R&D and see what they can do for you.