I'm running the Pertronix stuff, but I don't know anything about small blocks. I guess I'm having a problem visualizing the issues. I dropped mine in, match marked where the rotor lines up with a fixed hard point, installed the cap, laced the wires per the firing order, turned the dizzy's No. 1 terminal to match the reference mark, and fine timed it when running.

Their tech support is pretty good though.