Carb upgrade on 65 dart 2bbl 273

Looking to upgrade from a 2bbl to a 4bbl on a 273. What are pro's and con's with this upgrade want to keep completely stock otherwise.Any suggestions on manifiold (Brand) and carb. I was looking at edelbrock manifold but not sure on a carb. Would a 4bbl carb from my local parts shop HolleyII Stromnberg ,Champion be compatiable with edlebrock ? Any suggestion and guidance would help. Thanks