I got those pistons from Al Corda. CP stock eliminator pistons. .043" top and second rings with spacers to fill up the 5/64ths ring groove (NHRA requires stock groove widths). 760g piston, 144g pin (about one inch shorter than the stock pins and maybe 50g lighter). They are flat tops but the forging has material for valve notches that could be added. 2.031" compression height. I think it would be around 10.8:1 at the NHRA specs for Stock. Larry Hill has some older stocker cams he ran, but he didn't think they would work with the flat top pistons. I think he is running the 440-6 combo in his Cuda. I have an interest in Stock Eliminator engines and cars. My 440 could be built into the 426-4 combo with a smaller lift cam and the small AFB (3611S) and 516 heads. Not sure about bothering with that.

Good luck with your build. I'd like to see the domes on them as well.