I can't open the link that donnah posted for some reason. I've been looking at FB's pics of the Nuppin but I'm not able to decipher how the coil is mounted on it. It looks like the negative lead is going down into the center of the well next to the post?
Nope.... look at the picture I posted on page 1 again "Nuppin Build". The down leg goes down into one of the two holes in the top of the deck (the hole on the left in the pic you can see the set screw for it coming in from the left side) and the "hooked" end of the coil goes through the center post. Same for each coil if a dual coil build with one on each side. The AFC sleeve as 3 slots... two across from each other for dual coils, one 90 degrees between them for a single coil. HTH.