Stock 360 from a 1984 Dodge Pickup

Hello All
I bought a good running 360 from a 84 pickup to put in my 74 duster project.
Got some advise from guys on this forum to just run the motor the way it is if I'm not willing to rebuild it right now.

I want to keep a stock look and i want to keep the stock intake on the motor, but eliminate all the smog stuff that would have been on that 84 truck. Can anyone help me with how to go about plugging ports on the intake I wont need?
I know I need to tap and plug the egr ports on the heads and I am clear on how to do it.

My 74 Duster is a factory 318 car with the stock exhaust manifolds. I know there must be a perfromance hit if I use the 318 iron exhaust manifolds on the 360 so I am looking for a drivers side 360 stock manifold. The passenger side exhaust manifold from the 84 truck looks like its the same as the 74 360 Abody manifold, is this a good plan to follow?

So when I get the motor in my 74 Duster with my beefed up 904 trans, I am planning to use a 650 cfm Holley on the stock intake with the smog holes plugged up nice and neat under a stock 360 snorkle air cleaner.

Any guess how that stock 84 truck motor is going to perform with the small Holley on it with stock exhaust manifolds and dual exhaust?

I would appreciate any feedback you all.....Thanks