Here's the one that came with the truck.

The difference between the new Regitar units and the Delco Remy unit is that there were no adjusting screws on the Field or Armature points.

I was able to adjust this unit from 8.1volts when installed down to 7.3volts
Attachments

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)