400 to 451 stroker questions

if you have full deck height or more, or can deal with a thicker gasket then someone could possibly use the Mahle 1.35CH piston, only downside is it has 8cc valve pockets instead of the typical 4-5cc.
9.98 deck height and a 6.76 rod shows to be .005" above deck if my calc is right.

Doing the math, I would not want the top ring that close to top of the bore, especially for a power adder application. I'd rather use the 1.412 CH piston with a slightly shorter rod.