[Dave at Pelican Parts]

The Pertronix is the least expensive generally, and works fine. It uses a "Hall effect" magnetic sensor, and is supposedly a little more sensitive to up-and-down play than the optical (Crane Cams) system. However, on the Rennlist we have had reports recently of several relatively-new Pertronix gizmos failing. They may be having problems with their QC.

I have heard that the "Compufire" brand is more or less the same as the Pertronix, but without the problems. No idea on the price.

The Crane Cams optical gizmo is supposed to be the best-quality one, but is generally more expensive than the Pertronix and probably the Compufire as well.

--DD