Does any of this info match the car?
From the GTS registry
https://www.gtsregistry1969.com/
Only 102### car
LS23P9E102***: GTS#465: ##OWNERSHIP UPDATE## 7/4/2022 : GTS # 465 is now residing in Connecticut under the care of Steve K. Steve bought his GTS from a Classic Car Dealer in the Philadelphia area. The GTS started out in California, moved to the Eastern US through the hands of a few owners who did not put many miles on the car as it only shows 63,000 original miles. Steve discovered his GTS was built on Tuesday August 20, 1968. Originally it was painted Y4 Light Gold with Light gold interior. It is now W1 White with black interior, black vinyl top, and black bumble bee stripe. The original listing follows: Rob spotted the black bumble bee stripe in the back of a used car lot in California in 1999. A new battery and a couple fan belts later, Rob had the GTS fired up and running. His numbers matching 340/727 GTS has only been painted once and had the bumpers chromed. The rest is all original. Rob's GTS has factory A/C and power steering.