Fender Tag Advice If You Please...

Having a tag made with no documentation will be pretty difficult. That being said, you could have a "bogus" tag made. A couple years back at the FAST class races at US131, the fella with the black 69 Road Runner had a bogus tag that said something like "11 second Fast class". I don't quite remember but it was very clever. A 68 tag would be a bit more difficult, but that's an option.