Originally Posted by
RichS2659
These flareside (stepside) boxes were used from 53-79. They were 6 1/2 and 8 ft in length with, I believe, some 9 footers made also. Bill can confirm that.
Confirmed: 1957/66 F350 Flaresides have a 9'
Express Bed.
Mar-K (mar-k.com) has reproduced the short Flareside beds, but I didn't want to download their online catalog to see what years the beds fit.
Flaresides have been around since the 1920's, so there are myriad different types. Actually...the 1953/56 beds were different than 1957/72's originally.
When the 1957's were introduced, Ford replaced all the part numbers used 1953/56 with 1957 part numbers.
1953/56 rear fenders and the bed sides were slightly different than 1957/72's as was the tailgate. I think but I'm not sure that the 1957's are slightly taller.