340 Pistons with 10.5 CR with X Heads???

70aarcuda said
http://www.summitracing.com/search/Department/Engines-Components/Part-Type/Pistons/Make/DODGE/Engine-Size/5-6L-340/Year/1970/Bore-in/4-070-in/Stroke/3-310-in/?Ns=Rank|Asc

14 different pistons.....

I have spent a lot of time on summit's site looking for slugs. Seems they are all either too low or too high.