On page 129 of Santucci's Power Manual, the top photo shows an early HEI with separate coil. The coil doesn't look like any Chevy coil I have ever seen, does anyone know what it is or where it came from? I like the look of the separate coil, but I may just go with the more normal coil-in-cap version.

On a related question, my 250 has a 1977 sticker on it, and it doesn't look like anyone before me tore into it. The weird thing is, it has a non-integrated head and the separate coil. I have no idea what it came from, it was with my 1954 GMC when I bought it. Could this possibly be a factory configuration?