This collection of parts actually rolls on an S-10 chassis. It's cobbled together. I need to verify the Serial Number matches the vehicle. I might be willing to say that cab may have gone done the Tarrytown Assembly Plant. But what year? Was this a 1/2 ton? Was it a CEO (no)? Was it from a 2 ton truck?
From all the GM stuff I see so far, 'NL' means...nothing. There wasn't an 'NL'. It this is the case, this guy needs to get the vehicle titled correctly.
Why does this make a difference? If totaled, the insurance company now buys the salvage. Then THEY are responsible when someone who knows these trucks says, "Hey! There was no 'NL' truck!" If I can't show that 'NL' means something and the vehicle isn't a total, they'll drop him because the vehicle is a ...fraud.