What are they?? All posts I have seen say around a 66 for the center but for the outboards they differ greatly. Some are saying to start with 78-80. Car is a 440 4-speed ,I have no info on the engine. This was suppose to go on a stroker but ,every time I get close to building it something else sucks up my cash. This is an all mechanical set of carbs. I was also going to start with a 6.5 power valve and a 28 squirter in the center and 31's on the outs. Thanks