1975 Mack Western WS797LST was first sold in 1975, and this chassis was ordered on May 8, 1974 if not the first one built, it's pretty close. This is one of one of 170 WS797LST chassis built. This truck has the big sleeper bunk 36 inch.
The engine is a V8 ENDT866 one of 1,059 built. It is a 375 hp. Mack V8.
