John, I cannot comment one way or the other on that distributor. Its rating is claimed to be 50k volts. I'd have to go verify it-and I might be wrong--but if I remember correctly the stock hei pukes out 60k to 70k volts. I'm sure that someone can set this one straight as to the stock hei output.

There is a point where increasing the voltage doesn't make a difference. If increasing the voltage provided additonal performance, they would have simply have cranked the volatge up. The thing is that after whomever spent however much money on testing, it seems that somewhere in the 40k to 70k is where it's at, and more doesn't offer a thing.

The biggest problem is getting the spark advanced tailored to what best suits the engine, and the key lies in tweaking the mechanical advance. The seller claims the that the distributor has an adjustable vacume advance, so you're locked in to whatever preset mechanical advance at which the distributor is set. You can get an adjustable vacume advance for the hei, so I don't see what gain there is with the distributor.

I know the evolution process includes listening as much as thinking (or at least thinking that I'm thinking). One way to find out is to take a stab and see what happens. Who knows for sure unless one tries? My only concern is that there is a lot of snake oil and weaselpiss on the market, and you can guess my gut feeling on this distributor.