sometimes the gallery listings get misplaced, the 55 1st series trucks are the Advance-Design 47-54 style, the 55 2nd series are the Task Force 56-59 style, the grills on the different sizes [light/medium vs heavy] are different most years, and the GMC's are different than Chev's .... the 55 2nd to 57 are nearly identical, the 58 and 59 are nearly identical, the main differences are in the hood and fender emblems
Bill
