What would you expect from swapping to a carb with mechanical secondaries (I assume a Holley double pumper vs other) I’m not much for immediately thinking I need to change parts (aside from the converter you have) I’m obsessive about any tuning I do. You most likely could tune what you have and see much improvement. I’m no tuning pro but I do know it takes time, and trial and error to get things ideal. A Holley tuning book is a lot cheaper than throwing another carb at it. Still need to invest the same effort either way
