I just bought a 2003 R/T and it's really fun to drive. Good performance from the engine, although it could use a little more power. Many aftermarket parts are available to increase horsepower if you want that though. This is a great car to drive that feels like a sports car, and at a low cost compared to others of the same type. An especially good value if you buy it used like I did, only 24,000 miles and a fraction of the original cost.
High performance engine, steering and braking ability.
Lowered body, larger wheels, wider tires. Since they're not making Neons anymore, this won't happen. The SRT-4 had larger tires and wheels that should have been standard on the R/T.