This truck has been customized and you could build a similar truck with any 73-80 truck. 81-87 used a different hood and front fenders. The recessed grill would have been earlier than 76. 79-80 had chrome benzels around the headlights and park lights. Some 78's may have, but I know that all did not. 79-80 had a ridge on the nose of the hood that the pre-79 didn't. Silverados in 80 had square headlights. You could take the current GMC snow plow kit, remove the emblems, make a tube grill, and convert it to two wheel drive and make a similar truck as pictured. It may sound like a lot of work, but it would be an inexpensive alternative.