i dont have that banshee anymore i wish i would have kept it this one i have now is basically all stock it has fmf pipes and jetted to the pipes and thats it. i want to gain more bottom end at a cost effective pace rite now i got laid off and now getting back to work so now i wanna build another one i work at a machine shop so i figured i could shave the head .010-.015 and still be able to run 93octane fuel in it the topend is roughly 12hrs old on it now. so if i go with a +4 plate a shaved head and open pods and jet it up it should have a bit more punch?