Previous owners put a Mallory HEI type distributor in at some point in the past. I'm wanting to go to a more stock style distributor. Are these units stand alone other than a coil? They appear to be all electronic with a 2 wire hookup. https://www.napaonline.com/en/p/NRD484890?impressionRank=1 Rockauto carries them as well and the "info" tab mentions "Prestolite"