What is your goal, what is your budget?

I've run a 4781 on mine and was surprised how well it ran from the minute I put it on. Bought it used for like $160 and rebuilt it.

I've run a small venturi 950 hp that probably flows about the same as a 4781 or a little less. It actually ran fatter than the 4781 and required more tuning. It did make a bit more power than the 4781.

I've run a lot of carbs over the years, and I really like my 950 hp style carb. Kinda drives like a 4779, but better power than a 4781.