[CPNE]

Thanks this is the exact type of info and feedback I'm looking for.

I believe the option # is ZV1 and it is a standard RPO used thru the 90's (possibly still) for the MSO on many if not all GM vehicles. So I'm confident as to what the RPO is, my question is why?

I too have done the google thing. There is nothing unusual about this burb (aside from being 4x4 3/4 ton with rare 3rd door option ). It's got no unusual equipment and has 3 seats. It did have a plow at one point but it was an aftermarket/PO install, not a dealer of factory item.

I has standard tank and I doubt it was a fleet vehicle as I have the protect-o-plate issued to an individual at a home address not a company or business address. It was sold at the Commonwealth Chevrolet Company in Boston MA (Unfortunately now defunct) to a man who lived in Hanover NH (probably dead - he's sold his home as it's now the residence of an Optomotrist - another google search ). I don't have a build sheet but I do have the Ziebart rustproofing docs

Most vehicles sold in the northeast were manufactured in Tarrytown NY or Oshawa Ontario. This was a Flint MI produced vehicle. I'm wondering if the MSO was required because the delivery route this truck would have taken may have been thru Ontario and Quebec, down 91/93 thru VT/NH into Boston? It does not appear to be a special order vehicle. Low 4x4 burb production would lend itself to fewer facilities equipped to produce such a vehicle, which may be why Flint and not the "usual" facilities.

As many of you are aware I'm more interested in a vehicle's history and originality than I am with customization and modernization. This RPO quite frankly has me stumped. Any ideas and theories are welcome. Ideally I'd like to see other vehicles with same RPO with some know history to go with it.