Ballpark Value

Sounds like the GTS stuff was put on another body.

Yes. Not hiding that. This all happened in the 80's when finding this stuff in N.E. and elsewhere wasn't easy as it is today. Bought original GTS sitting in the dirt with weeds growing up thru the floorboards. Drive train freshened with a valve job and running condition .A Pick hammer blew through front and rear frames rails, nothing left of the floors and trunk.I was also younger and dumber. lol . Swapped body (same color) drove 100k until 2001 then restored 3 years ago.
I might pass on this as the seller feels his rides worth around 22,000 . Just trying to figure a price to negotiate trade and some cash.