increasing compression on a 59ci merc

[fs5]

that pic looks exactly the same as my exhaust port .
jackson i have researched as much as i can ,and basically a 55 seapro is a 60hp other then timing and jetting.the only thing i can't find a part number for is the sleeves ???
when my motor was apart after flipping it,i posted a thread about modding it and was told to take the ports to the wall .i remember poking my finger down the block and there was stuff all between the sleeve and block casting ,i know it was only my finger but it would have been under .020 thou it just felt like a very small bur . ??? my mate doing the motor said not to worry about it?
thanks for your replies.

[Jackson]

that pic looks exactly the same as my exhaust port .
jackson i have researched as much as i can ,and basically a 55 seapro is a 60hp other then timing and jetting.the only thing i can't find a part number for is the sleeves ???
when my motor was apart after flipping it,i posted a thread about modding it and was told to take the ports to the wall .i remember poking my finger down the block and there was stuff all between the sleeve and block casting ,i know it was only my finger but it would have been under .020 thou it just felt like a very small bur . ??? my mate doing the motor said not to worry about it?
thanks for your replies.

That's what I'm trying to tell u is that they have the same sleeve. If u can send me just ur power head I can get the compression up and get alot more Hp and torque out of it for u.