well i am a huge fan of trinity the devoted their life on banshee and i see some impressive number and a verry good reliability give harry a call ,1(877)fastoys,or go to there web site at www.trinityracing.com than click on service and voiala!!if i was you i go with stage3 porting you wont regret-it and buy a cool head or send yours to them they will do magic and you can customize their porting to your need!!!! hope this help