Welcome to the forum! On Wednesday Racing starts at 7 with registration prior to that. It is good to get there a little early (I try to be there by 630) to get everything set-up and ready. I usually get done between 1000 and 1100 depending on the night.
The Vintage class requires specific tires on specific wheels as well as a novak 25.5 brushless setup. I believe the plex has the bodies and they would be in the $20-$30 range. Spec speed controls (Like the Novak GTB) don't allow you to adjust the timing which is what used for the VTA class. You could use your car in the other touring car classes, Vintage is more about the style of the wheels/body and the spec motor/esc.
http://www.usvintagetransam.com/
http://www.rctech.net/forum/nebraska...es-thread.html