The REASON that Cessna added this COWL BAFFLE SEAL around the carb box intake, is because the "L"-models and up have a propeller spacer, and the fiberglass cowls on the L and up years have the cowl further away from the filter frame. They didn't re-design the carb heat box with a longer scoop, they just added the seal assy. to fill the 2-3" gap.
