Pretty sure Summit distributors are Firecore. Haven't heard much good about those. I have a BB Chevy stroker that I built...the owner brought me a Summit distributor for it. It looks ok, but we'll see when I get it running. Good friend has a Summit distributor in his B1 motor, but it's just a gutted unit used w/ a crank trigger.

Those DUI distributors are ridiculously HUGE. I suggest looking into them closely before getting one. They may work ok, but holy crap are they huge and ugly. I'm surprised they fit under some hoods, lol.

Even w/ the rust "issues" people complain about w/ the MSD distributors, I've never had a problem from one of them.