I'm pretty sure it was one of the guys from DC Tech that I saw at the Nats last year. He had a trick setup on his car with his hood gauge mounted so that he could quickly loosen the mount via a wing nut or something, and then mount it under the hood for stealth or easy FP adjustments. He had braided line from the rail to the gauge. Like I said, it was clean and real trick looking.
Search the banner ads on this site. I'm pretty sure they advertise here. If not, do a search on google and give them a cal.
-Banning.