The Stovebolt Site Forums The Shop Area General Truck Talk Strange running boards, need ID help please

Yes, that option was ordered to suit the buyer's needs.

GM used to state in Truck Data Books that over 50% of is trucks required alteration/addition of "vocational equipment to meet the user's requirements".

Buyers would use GM or other options as needed - look through the pages for cabs (and partial cabs) and chassis combinations in every size of truck.