Like my best friend who owns several old Pontiac always says, go back to a stock dist and points and all your problems will go away. The man has been right every time! When I had my 68 Firebird 400 I had my motor built like crazy, bought the MSD plug and play dist ($549), high end wires $99 (Taylor). Car ran great no issues. Point is, we dynoed the car before and after and ZERO difference after spending almost $700. Ever since, I listen to my Pontiac friend who has been playing with Pontiacs now for almost 50 years and now owns 8 of them, stock dist w/ points is just as good as anything else on the market today, all you do is keep an extra set of $8 points with you at all times just in case...