I changed out the oil pump and dizzy so I can put on a newer carb. The car is a 54 capri. Trying to figure out the cfm for it. I've been looking at 500 cfm 4 bbl. Is this the best choice? Engine is stock, no high performance parts. Would 600 work okay? What size was the original carb? My engine didn't come with one.

Brad
Sierra Vista Arizona
1954 Lincoln Capri