The block is cast in a hypereutectic aluminum/silicon alloy. This means that there is more silicon in the mix than can be dissolved by the aluminum, so some precipitates out as crystalline silicon. It's very evenly distributed throughout the block. After the block is machined, the piston bores are acid etched to remove the top few mircons of aluminum, leaving essentially only silicon for the piston rings to ride on. This is probably what he meant by ceramic bores.

Neat car. It's good to have recent head work and (hopefully) timing chains, too.

Proofread, lad. Proofread,

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Norm in NJ
Next oil change at 230,000miles