Later distributor in a 63 Dart

Hi good people (bad too)!
Need a little help; I recently purchased a NOS distributor for my 1963 Dart convertible w 225+automatic. The dizzy is supposedly from a later model (metal tag 46-6-3874598). Can anyone advise can this be used as is or would it need some modifications to perform correctly in my car? The engine is original one with a super six setup. My handy man said it might need some advance changes or something.... thanks a zillion! -Tina