Good idea, Dave, but they're all slightly dish-topped. I did find one that's probably a better fit, and it's almost flat- - - -less than a 1/16" recess. A Sealed Power 405P piston for a MOPAR 360 engine has a 4" bore, a wrist pin that's much closer to the Model A size, and a compression height that's just a bit taller than the Chevy piston. It will be a good choice if I try the OHV conversion, and a 1/8" overbore will bump the compression up a bunch even without the domed piston. There's always the option of milling the head and/or decking the block if I stay with the original head. Thanks for the suggestion!
Jerry
Last edited by Hotrod Lincoln; 04/21/2014 1:53 AM.