Sorry to hi jack, the Uni Syn is a great tool and I can see needing it for your dual quad hemi. Same deal as I was talking about with the plugs on your motor.

Someone I am sure makes a 4 barrel adapter but I don't know where to find one right off hand.

I raced this 2.9 crower stack injected 572 BB chevy with dart 360 heads dragster. It had kinsler installed split shafts in it so I could tune the manifold at idle with the Uni Syn. 1000 hp motor.