Vintage NHRA tshirt

Vintage 1999 NHRA Winternationals t-shirt! Screen print still intact and bright for being 24 years old! Not sure of the size, but my son would've worn it when he was 12, so I'm guessing a boy's large or xlarge. Measures 17" pit to pit and 23" shoulder to hem. Dark shadow mark on lower front, as seen in picture. From non-smoking home.