[bobcowan]

The DUI distributer is pretty popular, and seems to work well. It's just another version of the GM HEI. The good side is the simplicity. The bad side is that it's pretty big. Much bigger and taller than a Mallory Unilite. It would make your problem worse, instead of better.

Most crank triggers will need a distributer. You could use something like EDIS8 or CNP/COP off a crank trigger, and eliminate the distributer altogether. That uses a 36-1 crank trigger wheel, which is only 1/8" thick. Easy to make spacers for everything else. You can also get full control of your timing curves, and eliminate weights and springs.