Do back bumpers change over the years? Just tried fitting my bumper on my 69 bay and the holes don't line up with the bumper brackets. ( they are bolted to the bus) I have been up and looked at a friends and it measures the same as the bumper I have, his is a 72. It is 119cm between the two outer holes. If anyone knows or has a 69 and could take a measurement for me I would be most great full. Thanks