Hey guys!!! I'm looking for some info on rochester 2 barrel carbs. I've done some searching here and on the www. and cant seem to find what i'm looking for. I am wondering if all rochester 2 bls are the same cfm and what that is? I am also wondering if there are some that are better than others? Like what years and what they came off of. And from what I have found on the net. the numbers on the tag don't tell you much besides what kit to get. I have two of them and would like to do some junkyard hunting. Just want to know what to look for. Thanks guys!!!!