It looks like they both need a Quick hitch adapter.
They don't specifically list one for the F3680, but the do for the F3060
Male Quick hitch F2521Q
Aagin they don't specify which blade for the F3680, but they do for the F3060
Blade B2765, B2765A, B2775, model depends on serial number.
Going to a local dealer and asking might get you some better answers.