[HWYSTR455]

I've run just about everything at one time or another, and prefer MSD/Holley units. Tolerances on the housings is really good, pickups are really good (mag and/or hall effect), and for the most part are easily setup. The mag pickup MSDs (or other) are very reliable, and are less of a concern than HEI units. All are stable to RPMs most here will never see.

The HEIs wide spread terminals are a good thing, helps prevent crossfire/arc. That is especially a good thing once you start using CD boxes with higher spark. They do make the wide setup for MSD dizzies if you want that, but the regular cap design has ridges that help almost as well. I have not noticed any arc witness marks with them (as long as the parts are fresh & clean). Space is a premium, especially with 3x2/2x4 setups.

HEI unit quality is a factor for HEIs, and weights as well as matching weights can get dicey (on OE points setups too). You can skip right past all those drawbacks if you lockout a dizzy (any kind) and use a programmable MSD (or other) unit.

I can see using an OE unit if you are trying to stay original or for a 'look', but makes no sense to be to use one on a performance app. And try finding a good performance cap for an OE points dizzy. The few out there are just as expensive as any other performance cap, if not more. Cheap caps with a CD box are eaten very quickly. Or even just a good coil. Same with rotors.



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