I believe carfax only goes back to 1981. If would be perfect if that would work. Thanks for the replies.
You need to do a title search with the SOS. They usually charge you for every hit (past owners) found. Obviously this will only work if the car is still in MI. If the car has left the state, they'll usually only tell you where the car went (City & State). If you know the state, you can then do a title search in that state.
SOS was no help. Could not give the info out.