This is piston that has a whole lot of use thru the years. It is a pressure cast piston that holds up to racing environment. The configuration is similar to the Cooper "S" piston with a 6cc dish and thin rings. The set includes pistons, rings and pins. If you have to bore the block don't bother with .020 0r .030 bores. The block can take this size just fine.
Piston Set - 1275cc - .040