I have two new in the box sets of JE Pistons for BBC.
1st set is JE #257956, 4.500" bore inverted dish for 509 cubic inch forced induction engine. Summit price is $809, will sell for $700, pistons have not even been unwrapped out of the box, pins and locks included.
2nd set is JE #267964, 4.310" flat tops, for 496 cubic inch combination, would work well for either forced induction or NA. Same thing, Summit sells for $809, I will sell this set for $700, again, still in original wrappers, pins, locks and oil ring support rails included.