There used to be a place called Warrior Racing or something like that but they went out of business before I could get a set from them. My wife has an embroidery machine so I just sat down and drew up the design and worked out the bugs and made my own.

So if you have an embroidery shop around somewhere Im sure you could take in a picture and have one made up. The 'Supercharged' word is a Sofachrome font I believe, I dont recall what the font is for the GT and GTP are.