Thanks Willys, that's exactly what I was looking for.
Nah just a 600 cfm holley 4bl to a 351W. I know, I know 1/2 is WAY more than I need, but the fuel cell I have already has 1/2 in. outlets. So I figured I might as well run the 1/2 all the way to the carb and reduce it there than have to buy 1/2 in line AND 3/8 line if I reduced it at the cell.
I probably did the dumb thing, but it makes sense to me I guess.