I used the forged version of those on my stroker. I had either .030 or .040 milled off the step (can't remember which). With that and my decking, it resulted in the step being .005 out of the hole, and the piston face (the 7/16" ridge along the outside) was .005 in the hole. "How to Build Big Inch Mopar Small Blocks" has a section in there about this type of pistons.