Guys, Thanks for the info. I guess my gut freeling was right, just got to adjust the advance curve on my cut down Chev. points distributor, ran good with Chevy advance specs. Can't wait to see what it will do recurved. Now how about by 59A? I would like to keep the distributor down front where it belongs. How do we get modern 12 volt ignition level and keep a normal vacuum advance. All my old vacuum brake distributors always seemed to take a lot of adjusting. I don't see any aftermarket (Marllory, MSD, etc.) distributors that are anything other than full centrifugal. I don't want to go back to that. Has anyone been able to cut off a modern? 50's and up Chev. or other distributor and adapt it down on the front of a 59A block vacuum advance and all? Maybe even an HEI?