a daily driver for 15 years, then the engine was pulled for an over haul by it's mechanic owner, and then all progress stopped, and it's been in the garage for 35 years, with only 76,000 miles on it

 

the original story doesn't mention how it has original tires

https://www.holley.com/blog/post/unearthed_hidden_boss_mustang_survivor_rocks_original_paint_and_tires_/

https://www.holley.com/blog/all/1/