Quick comment: Do the roads suck in New Jersey like they do in Mass? If so, raise the air pressure in your tires. I bent my rim driving aggresively down a road a hit a somewhat small pothole. These rims seem a bit weak.
If you ever get a chance, these cars are alot of fun on a track. I beat a BMW 740i, Mustang V6, Volvo S40, BMW 325i and a couple of other competent cars. The 740i put up a good fight. It was more sloppy on the turns than the Jag with alot of oversteer but the Jag was more lazy with more understeer. My car was easier to control and had more accuracy and consistency and I came out ahead. My car was a spectator favorite since a XJ was a surprise at the track.