Help choosing a carb

Shelf carb…a classic 950hp like this one
Holley 0-80496-2: 950 CFM 4150 HP Series Classic Carburetor, Mechanical Secondary - Gold Dichromate Finish - JEGS

custom carb…Thumper( Dom)
I would stay away from the ultra stuff
wish I hadn’t cheaper out and bought the carb I did because it matched the bling colors on my motor( 850 race brawler)
I have access to a 950 hp like I mentioned above, I keep threatening to try it, maybe I will actually do it this year