What is a good 4bbl carb for a 318 engine?

my dad has a 750 road demon on his olds 350 with a performer rpm, cammotion custon grind, and stock heads. the thing wasnt that great of a quality from jegs. it was missing a float, and there were metal shavings in the metering block. a quick call fixed that problem. the new one had to be cleaned out being that it had metal shavings as well, but it runs great. i think im just going to go for a proform holley though because of the quality issues with demon.