OK GUYS, a TEN YEAR "sticky" thread and almost NO ONE has EVER answered the main question>
USE the PML intake, made by Wegner (now a GMPP item), the Front cover kit by Casey Wegner (also GMPP), my 302 Ford distributor that Wegner supplies, the Wegner water pump or Stewart pump, ATI Dampener, my matched coil.
THESE ITEMS where required for use by NASCAR in the GN-WEST series, for many YEARS.
The Valve Spring, most often fitted, is the 1511ML.
There are MANY racing series that require "distributed power ignition" to be fitted.
I will not state this is best ignition as one of the inventors of DIS, only to provide the answer to the question.
The Distributor WAS invented by a company named Dayton Engineering Laboratories COmpany used to light gas lamps in factories.