What are the Diamonds? Are they on the shelf pistons in a stocking size or something custom? I MAY KNOW A COUPLE OF PEOPLE to ask.
I caan get you more along the lines of what you might need even in an on the shelf style. Possibly. Not that cheap though. If it would be standard off the shelf It wouldn't be much more though. iF it is a blower piston that would be more and heavier built.
Ed