the F23 already has cast iron sleeves, and per conversations I've had with Brian(notoriousB) he said that they stock sleeves can handle a fair amount of boost. are you planing on going past 20lbs of boost? if so then you might want to think about sleeving, if not you should be fine. you can always PM notoriousB over at E-H, or on honda-tech. he's very cool, knows his stuff and will answer any questions you might have.DJ_Tantoy said:so i need the the rods pistons only? more or less about 1,200 $?