If you are running a high output Super Mag V or Super Mag + then this is the coil you need. It is FIE/Mallory's biggest output coil available and works well with any FIE/Mallory mag putting out over six amps.
Coils are rebuildable at FIE, drop it and break the terminal off, coil wire popped off not an issue the coil can be fixed for a fraction of the cost.
Coils are only available in red.
RBS has billet alum. coil brackets available as well under part # 2500-0147.