Which 4bbl carb for a 65 273

Need to buy a new carb for my 65 valiant vert. I'm converting from a 2bbl to a 4bbl specs are Stock 273 rebuilt, original 65 4bbl intake,2in duel exhaust,4speed out of a 70 340 duster upgraded 10in clutch 81/4 rear with 3.73 gears.can you guys suggest a carb Holley or eddy 500 or 600 cfms Thanks