This Boss 302 is live on Bring a Trailer. Check out the auction here:
https://bringatrailer.com/listing/1970-ford-mustang-boss-302-79/

This 1970 Ford Mustang Boss 302 was purchased by the owner in 2001, and refurbishment work started in 2010 included a repaint in yellow as well as the installation of a replacement 347ci stroker V8 linked to a four-speed manual transmission and a Wavetrac limited-slip differential. The car is equipped with black upholstery, power steering, and an AM radio with an eight-track player as well as a shaker hood scoop, front and rear spoilers, Wilwood front disc brakes, 15″ Minilite wheels, an adjustable Panhard bar, and aftermarket rear leaf springs. This Boss 302 has reportedly been campaigned in the Copperstate 1000 on several occasions and is now offered on dealer consignment with a removed Boss 302 engine, a Deluxe Marti Report, a window sticker, the owner's manual, service records, spare parts, and a clean Arizona title.