Hawk Bumpers - 53 -54 are different 55 is the same width as the later years 53 and 54 are very narrow to fit *inside* the body lines. 55 and later years fit in front of the body more and are wider - in height. There may be a difference in bumper guards from 55 up-- AND-- a 54 has a bumper guard similar to the later years. A 53 font bumper guard is unique to that year- and (some early 54's) ceecab@aol.com (june 2001)