I did my senior thesis in college on hopoing up Q-jet carbs. (I was working on a Power & Transportation minor, and my senior auto tech class required a thesis project/paper) I did several carbs for students in the class after that an d they loved them. They are a bit fussier, and not as easily tuneable as a holley, but once that are set up, you really never have to touch a carb again, unless you are doing more engine mods. I like them, even though i currently am not running any. I could dig around and find the paper if you are interested, but it might take me a while to find it... that was 20 years ago! PM me if you want me to look for it.