Yes they made single mostly for canadian cars and alot of 50's straight sixes. caps and rotor can be either or totally different.. The aluminum were as far as I know mopar made but in the electronic the pickups and reluctors were made by prestolight for sure. I got half a case of them in a prestolight box with a mopar label on it. prestolight made alot of stuff for Mopar. Wipermotors, fans, starters, door locks. Usually has the mopar number and a prestolight number also on them. My books for that stuff is prestoligt numbers. Not sure of alternators but some generators for sure.