One note Don, you don't have to use a points distributor in lieu of a GM HEI unit. There are any number of electronic distributor options that are a comparable size to the points type distributors. Three examples would be MSD (self contained, doesn't need a separate box), Mallory Unilite, and Pertronix. There are others as well. The added benefit is they look much "cleaner" than the big, clunky HEI.