Hi Denis, I'm fairly certain that the '63 used a bumper that had round backup lights, while the '62 had rectangular backup lights. Our '62s have a "gull-wing" appearance around the license plate well, whereas the '63 had less curves. Exhibit 'A': http://www.imperialclub.com/YearbyYear/1963/SpottersGuide/Imp10.gif Exhibit 'B': http://www.imperialclub.com/YearbyYear/1963/SpottersGuide/imperial.jpg It would be interesing to see if the '63 rear bumper would bolt on to the rear of a '62. Has anybody tried this???? Imperial Regards, Jay Mc Kee 1962 Crown Southampton 4-door