Carburators?

hello, I have a 1975 dodge dart sport with a slant 6 in it. Right now I have a holley 1945 silngle barrel carb on it but I am not very pleased with it so I was wondering what other brands of single barrel carbs could work for my engine?...I know carter is one but I don't know what model...

Also is there a 2 barrel option that doesn't require me changing the intake manifold? I'd like to maybe make it a super six if there's an easy change over...

Thank you!