Dutra Duals

What’s up!

Getting ready to start giving my dart some love under the engine bay. I have a few questions and looking for all the help I can get. Money is always an issue and the last thing I want is to spend it buying stuff I don’t need just because they look nice.

The car is a 1964 Dodge Dart GT push button. Everything Under the hood is stock.

Question 1.
I purchased a used set of Dual Dutra Duals from a member. He mentioned they are the new aussiespeed castings.

What issues will I have or what parts will I need to swap out to make these fit?

Questions 2
I plan on upgrading the intake manifold to either offenhauser, Clifford or possibly aussiespeed shop. Would it make more sense to swap these out at the same time? Does one affect the other?

Any help would be appreciated it. If a link is out there of someone’s post then send it to me.

Thank you!