You don't have to do any mods to get on the track. You only need a helmet, at least half of your brake pads left and good tread on your tires.
After your first time and you start driving faster you will want to upgrade your brake pads and fluid. There are many mods you can do to make your car handle better but your car will handle the track great stock.
Come out and have some fun and enjoy driving the car for what it was built for.
Here's another video from October, won't be back out until spring
http://www.youtube.com/watch?v=kV9x0XFPFIM