my buddy has a 1994 150 johnson fast strike he is also a diesel mechanic we are going to rebuild his outboard its a freshwater motor he says putting new sleeves is the best way to go the block has already been rebuilt in 2001 but they left some pistons origanal some board out 20 over and some 30 over my question is this is there anything i should know about resleeving these motors and how much does the sleeves run ? are they already honed thanks anthony NY