273 2v with EGR valve???

Tom, the Edelbrock Performer intake and a 600cfm Holley or Edelbrock carb will probably be the most readily available and cheapest used or new. If your going to buy new, i'd look at the 500cfm Eddy carb for what you're looking to do.

If you do go Edelbrock on the carb? Look into a small, 1/4" type isolating base gasket, as they really perform better without a lot of baseplate heat.