The Holley Street Avengers are great carbs, if you want to go that way. The 570 would be way more than enough for that engine, but with the vacuum secondaries it will work just fine.

An Edelbrock performer and the street avenger are a good combo.

1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket