I have the supercharger reinstalled and all the vacuum hoses, electrical connectors and so on. Unfortunately, when you get an engine in pieces, it'* hard to know where everything goes. I have three "extra" hex nuts. Two are the same size as the altenator bolt nut and I also have a 3/4" hex nut with grooves etched from each side to the opposite side (three grooves in all). Where does this one go?