Pros: Everything is included, replaces ignition module and coil
Comments: This unit directly replaces the stock distributor with a unit that combines the ignition module, coil, and distributor into one unit. Bolts directly onto the engine and uses the same cam gear. Increases spark from ~20K on the stock unit to 50K. Takes about 10 minutes to install, then all that is needed is to set the timing. Engine has crisper response and improved power. May also get an emissions boost, but my rig is exempt so I have no idea.