Might be faster to call him (Todd Marsh).

Another option is the Speed Pro 2355 "six pack" pistons. Cheap on ebay, but don't come w/ the rings.
https://www.ebay.com/itm/SPEED-PRO-...-Flat-Top-for-MOPAR-440-030/253626889627

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 4 speed, Dana 60
'71 Demon 340, no drivetrain, on blocks behind the barn
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax