Well i didnt sign up for Stadium2 beta because i expected it to be the same, installed it today and what a crazy difference. Stadium cars are definitely heavier and phyiscs are different but the big one i noticed was how white-knuckle fast it's gotten to compensate for the extra weight. LOTS of TMU stadium tracks still work but theres quite a bunch that are increased difficulty because of the extra speed. and then theres still those that dont work at all because of the new physics, but they did get pretty close to the original in matching the gaps... just cranked up to 11 on the dial