Really depends on you mostly. If you don't own a carb and don't know a lot about carbs then get a simple street carb like a 600 cfm Edelbrock.

Personally I'd put a Holley Sniper on there but it is about a $1500 investment by the time you consider the new fuel tank and internal pump. In the long run you'll enjoy the Sniper and you'll wonder why you ever considered a carb but you have to get over the learning curve.