Carb for my 318

I have a stock 78 318 with a 360 4 bbl intake from a B250 van. I need a carb to replace the Holley 570 Street Avenger I have. I have it narrowed it down to 2 carbs.

The lean burn system is long gone and has a electronic dist,but I will be changing it to a electronic vacuum advance dist with a MSD 6A box,adding headers

Which one would be best?

http://www.summitracing.com/parts/HLY-64-1532/

or
http://www.summitracing.com/parts/EDL-1403/
I'd pick this one: http://www.summitracing.com/parts/EDL-1406/
500 cfm is too small IMO,