I was doing the final assemble on me Coronet last night and I noticed that the hole in the 4 bbl manifold for the temp sender is much larger than the temp sender from my 2 bbl manifold. Does anyone know what the size is so that I can get an adapter fitting? or does anyone know if the sender is available? What kind of car would I ask for - 57 Belvedere? THanks Bill M 65 Coronet 500 'vert