I've got one on order now - should be here soon. The 550 is running good now and I'm not about to buy and wrestle with 2 sets of points, etc. IF I can avoid it. Hondaman's Ignition just makes sense.
Over the years, I've messed with too many ol' flathead Fords distributors with 2 sets of points. [Likely, a lot of you guys don't recall them.] Always an agravation.