Your Competition would appear to either a 1974 or 1975 model. The new serial number format came into use in 1975, but there is still the possibility that yours could be a 1975 model manufactured in late 1974. Does it use the old "bamboo" style logo as on your 1972 or does it have the newer block style logo? Also, while I have the the serial number for the 1972, I don't the serial numbers for the Pro or Rally. It would be appreciated if you could supply these, along with new links to the pics, which don't appear to be working.