So, I've been working on getting my winter beater running for a while now, and have come up against a few issues with the new carb I just put on it. It's a Holley 650 spreadbore single pumper, with vacuum secondaries. I don't know which vacuum nipple to plug the vacuum advance into on the front of the carb, for one. There are two little ones; one being on the baseplate and the other coming from the primary metering block. Secondly, this thing has an electric choke. Do I plug in keyed 12v to it, or does it need just a signal, or what? This thing has been kicking me in the ass for a month. I've already got a grand wrapped up in it, just trying to get it going. Just discovered that the ballstud on the old factory 2bbl carb is a part of the linkage, and is not removable. Now I have to either find a universal accelerator cable, or find a ballstud, which Murrays, Advance, Autozone, nor Napa had.