When I bought my Brute the owner lived in Midland/Odessa area and never went mudding in it. So he decided to dril 1 and half inch holes into the airbox. He put 9 holes in it all together. Since I have had it I put a new airbox in it and put snorkels on it. I know its running rich cause it will back fire through the exhaust when I left off the throttle after having it about 3/4 to WOT. Thing will shoot flames out some times about 3-5 inches long. Haha... I know running rich really won't hurt anything but I want to change it. Is there really an thing that can happen when running rich other than fouled plugs? I have the Big Gun full exhaust and moose module. As it sits now what size jets should I look into buying? I just need a rough idea. Thanks for your time.