I have an older version of the Maximus ST with a TORQ 12 engine it needs a knew piston and sleeve but I cannot find it anywhere I have been advised that I should just get a knew engine for it.  Unfortunantly I really like that engine and am not gonna give up without a fight.  I have found piston and sleeves for the TORQ 16 and was wondering if somehow it can be fitted in the Torq 12 since I have heard of this happening before and would it have to be rebored or not?  Or possibly if I can't do that it could be rebored and then fitted with maybe an oversized piston? Would appreciate the feedback thanks.