HEI and 12V

[rickf]

In a couple different threads and across a few different sites I've seen mention of supplying full 12V to newer HEI ignitions. I just put in a Pertronix units, seems to be working fine. I replaced the distributor and the coil and the plug wires.

The engine is a 71 GMC 350V8. The stock coil mount had a resister looking thing attached to it. I figured this was what the talk was about, so I took it off and tossed it.

Is this in fact the thing the talk is about?
Or is there something else at the other end of the hot wire I ought to eliminate?

I am using the original wire that disappears into a bundle that goes through the firewall, I have no idea where it goes from there. Another thing I think I'm reading from the threads is I probably ought to up the size of this wire, yes?