Electronic ignition upgrade

The "Skip White" (actually Ningbo) ready-to-run distributor is not an option for a slant (always tell us up front when asking). If you go Pertronix, buy Ignitor II or III. That will let you eliminate the ballast resistor, for more spark and simplicity. III adds MSD and rev limiter. If you go GM HEI, the 8-pin module and coil is simplest & best. Pick from a 85-95 GM V-8 truck and get all the connectors and cables. If scared of junkyards, TrailBeast here kits new parts for ~$200. You will also need a 1971+ slant electronic distributor (no points).

An earlier (ca 1990's) distributor conversion is the Crane Cams XR700 optical pickup and external box. I had one on my slant and big-block Mopars (J.C. Whitney catalog) and can find today new on ebay, and they even restarted production. But, it still needs a ballast (old electronics) and the photo pickups can fail (one of mine did).