Mack Truck R-600 

That;s an old one has the green, dash. 70 they had the bigger dash & tan color , I think 85 they went to the silver/grey interior.

I remember sitting in the yard letting my R model warm up, Listening to the other 48 or so tractors & dumps doing the same thing.. A cloud of exhaust smoke lingering over us , LOL..Miss those days

They were better suited for short run super heavy hauls... Some ran OTR but not many.. Dragging 70-130K-Lbs were their happy spot.

They'd say, "Sir step out of the truck, we'll let you put your handcuffs on before we get started" HAHA.

It don't look that bad,, seen worse that were still hauling back in the day..