After reviewing the latest ROAR rule book available http://www.roarracing.com/downloads/..._Rule_Book.pdf online, there is no USGT or 4wd GT style class even listed. If you have information to the contrary, could you please provide it to show that it is a ROAR class. And what ROAR does have for VTA was plagiarized almost verbatim from the USVTA rules.

What I know to be the USGT class rules are listed here
U.S. Vintage Trans-Am R/C Racing Series