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@Darth V8r is spot on here as always. As an FYI we have stock bore 5.3 Pro LS pistons for the 0.945" pin as well. For the 7cc dish version that would be part number SUM-326945780-7P. These pistons come with grooves in the pin bore and clips so you'll be able to use them with those Eagle rods with a 0.945" floating pin.