timing gasket/seal difference 65 vs 66+ 273?

Anybody know what parts of this kit might not fit the 1965 273? Listing says fits 66+ 273, not 65.
Detroit gaskets any good? I might pick up a pair of these if they will work.
Thanks y'all,

Detroit 14012 Timing Cover Gasket Set For 1966-93 Chrysler 273-318-340-360 V8 | eBay