I have 2 '65 4 bbl intakes both with the same casting #s. One is documented from Los Angeles plant on '65 Dart, the other is of unknown origin. This is from the '65 Dart.
And like slant6dan stated on a air cleaner thread, there was no CAP in 65 so even though one manifold is known to come from California it probably is no different than one from Hamtramck.
