Needing a new carb for my dart. It's a 72 with a 360 10 to 1 compression cast iron heads with 2.02 1.6 valves. Has air gap intake 3.55 gears auto trans . Car will be raced on weekends and driven a lot on the street. I may upgrade to a set of edelbrock heads if money allows. Car runs pretty damn stout but I got engine pulled to refresh over the winter. What size, what brand and should I do vacuum or mechanical secondaries