For the power dept I have a UNI, Q2, rejeted and drilled the slide, removed snorkle, removed smog crap. Geared 14/45 moving to 14/48 soon. I really need to get more power and snap out of this thing but not at the cost of reliability. I am buying a 101 overbore piston with 10.5:1. Who has done this? I can do the work myself for a total cost of @ $200. A port and polish wil cost me @ $350-400. I have been told that a port and polish will give more bang with a hi comp piston than a hi comp piston and hot cam w/o a port and polish. I would rather save the money on a port and polish for a larger tank and custom seat. Anyone here done just a bore and hone with a 101mm kit and what are the results, Im looking for a VERY noticable increase in power, I was not very impressed with the jet, intake exhaust mods. I didnt notice a big increase for the time/money spent. My Brute Force 650 will smoke my XR and its a 630lb utility quad. I am looking for the next logical step in power.