Hey man, I have a lead for you to follow if you'd like. The shop I goto had an 01 track/race bike for a few seasons. I look at the business cards and they had a black undertail piece in there. If you wanna call Ron and ask him how/what they did, I'm sure he won't mind.
http://www.washingtoncycleworks.com/
908-835-0043
I'd ask for you, but won't be in the shop till tomorrow or Friday to get slicks mounted.