Carb Swap?

I'd go with a 1" open spacer and a 750 carb. I like Double pumpers, but a good well thought out VS carb would do well.

Performer 318/360 intake isn't a slouch when set up well. The RPM and Air Gap are a bit better.

Don't know the cam, but, I'd guess it's in the mid 230's at .050. XE284 or something like that