Definitely had some work done to it. Not the original shifter, tach and speedometer are aftermarket, cab air ride is aftermarket, paint is not original, but it could be a great restoration project for someone. It does have the correct KW grill ornament. For 1973, KW changed the grill ornament from the "crooked" letters to the block style letters and only for 1973, the silver portions were gold to commemorate KW's 50 year anniversary.
I think the manufacturer of the air ride cab system is Air Link, or something like that. The exterior cab entry rails, ( broken ) indicate it’s a ( Splendor ) package, sort of when you buy a car and you can choose an SE, LT, or SLT level of trim, but normally the seats would have stripes of a complimentary colour 👈 Canadian here, to go with the full access package. The seat is my personal favourite, a Lear Ziegler Smart Seat. Parts are no longer available, but I personally put 3 million miles on those seats. Owned and drove an 82 K 100 VIT for 26 years. Ok, so that makes me a nut job I guess. The truck has been well preserved. It’s not uncommon to have the dog house pad ripped by a loose shifter. You will have to have those parts made. KW pulled the tooling from the manufacturer years ago. Probably a small cam 350.
The oil dipstick should have been behind that little door on the front you will have to tilt the cab to try & find out what happened to the filler/ dipstick tube that is strange to me that it’s not there you definetly need to check the oil before you crank it over
C ould you see if it was updated to a big cam? Man the frame looked golden, didnt. Might be crusty under the fifth wheel. Just needs detailed and it would be great for a hobby truck.