piston identification (pinto)
Just stripped a motor down and it seems to be a pretty hot motor by the looks. Its got a cam tech cam, ported head nice valve job etc
Pulled the pistons out, they are marked, eb 397 P S and then U.S.A 1 on the other side.
They're 30 thou oversize but i think one may not be salvagable as it looks like its got too hot and melted a little.
Can anyone tell me what brand they are, and also if they're anything special??
cheers