Summit sells them.
FEM-980P60 That is the number for the .060" and they have .020, .030, and .040". Summit calls these the Sealed Power/Federal Mogul LPG pistons. The dish is "D" shaped and only .150" deep as opposed to .310".
That full round dish you have, all but eliminates the quench effect.
Summit also sells the H909P and uses the name Speed-Pro Hypereutectic Pistons for them.
It has been several years, but my machine shop got the FEM980P60 pistons for me for less than I could find them anywhere else. You haven't pressed the pins in yet so I would hope the shop would get the other for you if that is the way you want to go.
