So you're standing at the parts counter.....

If you totally understand ignition electronics and how to blend different parts from different years, that is great. I am pretty good with wiring, but not so much with ignition electronics. A few years ago, I bought a complete MSD setup. I got the MSD all mechanical advance distributor, MSD ignition box, MSD plug wires and an MSD coil. I assumed that if I stuck with one brand, it would work well. It does. I am VERY happy with it.