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No, the '57-'58 F/M-series trucks will swap perfectly between themselves & '59-'60 F/M-series trucks will swap perfectly between themselves, But not between the two Sets of Year Models.
The '57-'58s F/M-series trucks have the ROUND Turn Signals, the Wider Lower Fender section for the Round T/S, Taller Grille, Narrower Grille/Vallance set-up & Shallow Peak Hood.
The '59-'60s F/M-series trucks have the RECTANGULAR Turn Signals, Narrower Lower Fenders for the Rectangular T/S, Shorter Grille, Wider Grille/Vallance set-up & Progresively Deeper Peak & Taller Upper Sections on the Hoods.
Because of these Body changes between year Sets, if one wishes to incorporate singular Front Cap parts from either of the 2 Year Sets, one has a Great deal of Body work ahead of themselves to do, because it will be necessary to either Fill-in the Gaps between the Sheet Metal or get rid of Sheet Metal no longer needed from the swap.
Plus the Peaks on the '59-'60 Hood are To Deep for a Proper fit w/ the '57-'58 Grilles, as they will not close or if one manages to force the fit, they'll Rub horridly.
The only way to avoid this is either to leave your truck the way it came out of the Factory or Swap-out the Complete Front Cap between the 2 Year Sets.
Thank'ee kindly, B.@.W.!
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