I have a 65 Dodge like you. And I have a single 4 on it like you. And you are correct. It looks totally wrong. I assume the new crossram would work much better than the original because of the larger and better shaped ports. I have a ported one of those that I would sell if you want it. And I have some carbs. You are right. It would look much better. Single 4 on a hemi is just totally wrong. Especially on a 65.