http://www.arcracing.com/servlet/the-974/ARC-Billet-Flywheel-Kohler/DetailUses the Vanguard/Model 28 Coil (both facing out) which are sold separately at the following link:
http://www.arcracing.com/servlet/the-906/Ignition-Coil-Armature-Magneto/DetailCoil brackets are included and may need clearancing from your intake manifold depending on the manifold you use. We recommend you grind the coil bracket to accomplish this if it is necessary.
You may need to shim the starter slightly to keep the starter and ring gears from binding. As always, lubricate the ring gear. It is also a good idea to occasionally unbolt the ring gear from the flywheel and rotate it so the starter gear isn't hammering the same ring gear teeth over and over until they fail.