Turbo 383 in a A-body Barracuda

Agreed, once it opens up the pressure will take care of the rest.
It looks like you are getting short on space, how are you going to run it from the wastegate back to the exhaust?

On another note, with your skills you can get that air cleaner on the other side of the radiator support, or the other side of the inner fender- no?

This thing is bad ***, ever since I got my turbo car my mindset has been that every car should have a turbo, but I don't recall thinking about putting a turbo on a big block- that has certainly changed.