Does anyone know where I can get my stock sleeves honed 20 over? I know It needs to be done with percision and under different cirumstances than a normal bock. Thanks in advance.

 

honing will not get it that much over stock . it needs to be bored . What area are you in ?

 

you could always contact your local porsche service shop and ask where they send their blocks to - i am fairly certain that their boxer motors have frm sleeves too. if you say where you are located it might help the search.

 

That would be a boring and you need to go from 87mm to 87.5 and buy the stock (expensive) Honda Pistons.