The pistons are flat-top +.030 cast items, OEM replacements for a 1980-84 Cadillac 368 cu.in V8. The short block was built by Tom Langdon per his article in the Sept/Oct 2003 "12 Port News". Offset ground crank (now 4.125" stroke), 292 rods etc.
I don't know if the hyper pistons are available for this application. If they were I probably couldn't afford them!
