I'm running a Mallory. I initially tried a MSD, but the intake manifold extended back too far to slide the distributor in. With smaller diameter, the Mallory makes it in, but not by a whole lot. I'm happy with the tri-power set up. One aspect of it is the visual, it just looks cool on a Hemi. Performance-wise, it's better when I nail it in first (rolling) or from a stop, but if I open all six at about 70 or so, it's less impressive. Just an adjustment issue, I haven't hit the right combination yet. The carbs are Rochester, they're all functional. As a lot of you already know from your own experience, the real fun is in the driving.
It's never been on a dyno, but the best guess is I'm getting about 310-315 hp. And with the total weight of the car just under 3000 lb., it does all right.