WTB: Revo Motor or Piston and Sleeve

[north_shore_racer]

Well, i popped open the motor on my revo to clean it up, and the piston is missing a huge chunk like someone bit out of it. so im in between either buying a new piston and sleeve for a 2.5r or just buying a new motor, either another 2.5r or maybe something else, possibly a 3.3? im looking to keep it as cheap as possible so if anybody can help me out thatd be greaty appreciated.

Thanks
John

EDIT: The sleeve looks ok, so i dont think im gonna need to replace that but the piston will DEFINATELY need to be replaced, just the Piston, i dont even need the rod, that looks ok too.