i went to napa and i wanted to order a new carb for my car i get a big discount there so i want to use napa. they came up with three (3) carbs from a 66 200ci mustang. the autolite 1100 ,a holley 1100 and a, new holley 1100 the autolite is the most and the new nolley is the cheapest. my car came equipped with the autolite 1100 but can i use either of these carbs? does the holley work better then the other? thanks guys