'67 Fury, 383-2bbl, all stock.
Once I start it, there's a bit of a putt-putting at slow idle, with noticeable carbon spots on the ground after five minutes or so. I've pulled several plugs, and they all look fine. I did a full tune-up about 5k ago--plugs, points, rotor, cap, set timing.

A friend who's worked at dealers his whole adult life says I should have put a MP electronic ignition on it when they were still available. But, of course, they aren't available anymore. So I'm looking for alternatives. Again, this is a stock 383, so I don't see the need to go with some high-dollar race setup. I'm leaning toward Pertronix, or maybe one of those setups D.U.I. offers. Simple is best. This thing's getting a factory dual-snorkel air cleaner one of these days, so clearing the passenger-side tube on that is a consideration.

Thanks!

http://www.manciniracing.com/ma361383400e3.html

Same thing as the MP kit, not that I think you have an ignition problem.

Or you can piece a stock kit together from Rock Auto for less.

pertronix is the "easiest". was the fastest thing I ever did messing with a distributor.

the cheapest would probably be that chevy spark control HEI setup.
http://www.hotrod.com/how-to/engine/1311-convert-a-ford-or-chrysler-ignition-to-gm-hei/

What SC said, more in depth info on whats going on. good chance the problem is elsewhere. To ans your Q I would not go with an orange box in the MP kit but either a rebuilt Autozone point dist (they're cheap) & a Pertronix & not sure if I or II or III would be the best money spent for your app (& you might go with a stroker 451 later on down the line so a II or III might be an appropriate choice right now for your stocker) or an OE black HEI '75 chebby module mounted under the dist which works awesome (someone sells a plate for that but it is pricey & you can easily make one & use radio shack heat sink paste and an E coil with no ballast (not sure which coil to recommend) & that depends some on what module you get (there are OE and high performance HEI modules). I have a P III & a used point dist & some Lowes bronze maybe brass bushings & an adjustable reamer but I ain't got to it yet to get it assembled & see how it acts in a DD (85 Ramcharger 318)

That's interesting--if it's not an ignition problem, what do you think it might be?

black carbon spotting and putt putting is a bit difficult to say if it's normal, as a bit of it is with an old school carb and points setup, or it's indicative of the need for a complete tuneup.

plugs, points, rotor, cap, set timing is part of a complete tuneup. Did you adjust the carb too? idle mixture, choke setting, low and high idle speeds? New filters? PCV working properly? All of it applies.