[tharbert]

Once bored, you can have nickel-silicon plating (Mahle's Nikasil) added to your cylinder bores. Maybe someone who knows more can wade in but I don't think it adds very much at all to the tolerances and provides that extra level of protection. I had Supertec add nickel-silicon plating to my new brial cylinders. I think they contract it out so maybe contact Henry Schmidt for more info.