Dynos should be used as a tool take those numbers with a grain of salt. Use the same one if your testing. Ever dyno is different, and will give different numbers. If you can take that car to a track ( find out what it weights) get the mph. And you can get a pretty good idea of the power. There is nothing wrong with that 750 Carter/ brocks are a good street carb. If your drag racing it and you want the most HP than a holly will be a better choice.