At 7,000 rpm, a spark plug ignites the air/fuel mixture nearly 60 times per second. Any one of those 60 sparks going amiss can at best be mildly annoying, and at worst cost you a race or an engine.

Back in the day when we knew where most components came from Delco was manufacturing new distributors in the heart of Indiana. In fact, most components encompassing new Corvettes and other fullsize ...