Currently have a Holley 3310 vac secondaries on my .30 over 383, electronic ignition, M1, 10-1 compression, balanced lower end, stock 906 heads, and 383 magnum cam with stock exhaust manifolds, 727, and 3:23 rear.

Thinking about a Holley Avenger 770. Do I need the aluminum version? Anyone have any opinion on this carb? Other recommendations please. Thanks.

Hope everyone is safe and well!