If this was the same group of guys we met off barrett about a month ago they also said they didn't use nitrous, BUT when he was at Commerce two weeks later his intake piping blew off from a nitrous backfire or puddling. He had to push his car to the side.
Little did we know, that tool box he had in the back had a hidden bottle in it.
The trans am has a fully built motor with bolt ons and probably running nitrous.