Locked Mechanical Timing

Bad idea using a b/res with HEI because it has internal current limiting. Using a BR further reduces spark energy. You are better off getting an MSD #8207 E core coil [ or similar ] since you have gone to all this trouble. Remove/bypass the BR, it is not needed. You will get a much hotter spark & you can use 0.45-0.060" plug gaps. The module now switches the heavy coil current, which allows for the better coil & no BR.