IT'S A TYPO!
The package on the left, #11605, is a real Fox 15 piston & liner. The right package, #11605, looks unopened and is how it shipped from the factory. It was mislabeled as a .15 P&L and may actually be a Stunt 35 P&L. The bore measured about .799", allowing for the plastic. The bore and stroke of the stunt .35 is listed as .800" x .700".
Ara