Once you've located an HEI for the six cylinder inline Chevy engine you can tell if it was for a computer or non computerised engine by whether or not it has a vacuum advance diaphragm. Non computer jobs have it and the computerised HEI does not. Instead it has a second short wiring harness coming out of the distrib hsg with 4 wires and a 4 pin plug.
Also keep in mind that the V6 HEI is not the same as the I6 HEI and won't fit.
When you find one you can use all the hi-po goodies for the 8 cyl HEI from MSD or whoever as that much is all the same whether V6, V8, or I6 as long as it is the coil-in-cap HEI. Rotors are all the same but of course the caps are for either a 6 or an 8.
A good place to begin with plug gap is .045" and use a good set of wires like Taylor Spiro Pro.
Freedom from points - ya gotta love it!!
Mike
