T/Anks Brad!!! You've made my day!!! I love watching the original vintage series TransAm events... I saw some as a young kid in the late 60s-70s.
Of special interest, I'm aware that the current active late-model SCCA TransAm (TA, TA1, TA2) and current Historic Vintage TransAm (TA, GT1, AS) racing groups are making plans to have their events combined on the same race weekends (~2017 season... if possible)... IF that can happen, it would be worth the trips to attend where ever/whenever they are held.
I've often attended the Road America Vintage Historic races (Elkhart Lake, Wisconsin) races... these races are awesome to watch, as well as tour through the pits and see the cars/drivers/owners.... vintage race car heaven!