I don't know of any east coast road course tracks that people just come on and race. They rent it out to clubs like PDA or EMRA or PCA, etc.
Expect approx $250 per day per person for 2 hours of seat time.
Why not just go with PDA on their dates below? You will not be able to get the 50 to 100 people who will road race at $250 a pop from this site alone.
August 5th-6th Thunderbolt at NJ Motorsports Park HPDE
October 15th Thunderbolt at NJ Motorspots Park HPDE
October 16th Lightning at NJ Motorsports Park HPDE
November 7th Thunderbolt at NJ Motorsports Park Open Track
November 8th-9th Thunderbolt HPDE & Sprint Races
http://www.pdadrivingschool.com/inde...id=36&Itemid=1