Most of the small Hondas you mention are decades old. It is very doubtful you will find one in good shape in Mexico unless it has been brought down by an American!
That said though, small scooters are VERY popular in Mexico. Pick up a newer small Honda scooter or less known brand and ride the cr*p out of it. Better fuel economy, better storage and parts availability, all pluses for you to consider a true scooter. Good luck.
2012 Honda Silver Wing
2005 Gold Wing 30th Year Anniversary
1974 CT90's (2)