That is not definitive, as the 4 speed trans was different between 65 and 66.
One other thing, that list does not show a 3.91 gear as an option. I did have a 65 Valiant with a 170, 904, and 3.91 SG 7 1/4 rear.
That sounds like a fun combination. Someone ordered that combo in purpose I'm sure. Yes all sorts of crazy combinations that don't fit the written information. Never mind say never with old Mopars.
