[Todd Gross]

I questioned Hard Coat Anodizing with my Diamond Rep a few years ago. His statement on the subject was that the Hard Coat Lands will not seal as well as a properly machined , bare aluminum Land.
He said the up side of the Anodizing is greater longevity.
As for if you want to send your Pistons out for Land work, you can consider Rebco Machine in Wichita, KS. They specialize in Piston work. Outstanding quality.