[davepl]

My motor makes 330 and I run a bone-stock distributor and coil, but upgraded with a Pertronix Igniter III module inside that replaces the points. I don't recall if it does capacitive discharge, but they claim it's like a little ignition box that goes right inside the distributor. They claim it puts out 5X the spark energy of points. And it does multiple spark discharge through the entire RPM range as well.

If you have a known good distributor and coil, that's what I'd do, and you'd save a good chunk of money that you can spend on other parts! If you didn't, I'd buy a distributor from Pertronix with the module already installed. You could also get a GM HEI (not Chinese junk) and upgrade the spark module. The GM units are solid until about 5000rpm and much more when the module is upgraded.