The old b model carb is junk on my 64 C60 w/292 and I'd like to replace it with a carter YF. I would like to know which one works the best with the least amount of modifications. This is a work truck and spring will soon be here and I need to get this truck up and running before things get busy. I'd like to for once get this truck to run like it should and I just don't thank thats gonna happen til I get a decent carb on it. Thanks