Me, 23champ, huggybear, ridenfast03 and the rest of our posse are staying at the south end so we don't hafta go far to get to the strip. There will prolly be 8 or 9 of us going down.
Its called the Sabertooth kit. Its a bolt on kit that ups displacement to 510cc I believe with 95 hp. Try Sabertooth Racing. The cyl was designed by Calvin Pollet, the same guy that designed the Cheetah PV and Cub.
In a nutshell, they're taking the peak horsepower and moving it to a different rpm range. An engine that develops its max horsepower at 7000-8000 rpm is far better for hillclimbers or woods racers than an engine that makes it peak from 9000-10,000.