Well, I took my car to the road course at Carolina Motorsports Park this weekend with NASA Southeast. What a blast. If you have a car, any car, you should do a track day event. It is so much harder than it looks but once you start to figure it out it is a riot.
I went with a friend who has a 65 Mustang he's modified for road course driving.
As for my "sports" car, it did pretty well. Even as heavy as it is it had more power than I could use. I put track brake pads, new rotors and ATE brake fluid and braking was never an issue. Well there was no brake fade or overheating but more braking would certainly be even better. The brakes would literally be smoking after 20 minutes on the track. It was not until the second day before I was good enough to have any idea about the car's shortcomings as a track car. Even with the "sport suspension" there was too much body roll and in hard cornering and the inside rear tire would break traction even with the limited slip. Then traction control would kick in and ruin everything.
With my driving skills (or lack thereof) understeer was more of a problem than oversteer, but usually because I braked too late and turned in too early. At times, when I listened to my instructor I got some power oversteer on corner exit.
All in all, its no race car but for a daily driver it makes a decent track day car. I think with beefier anti-sway bars, maybe stiffer springs, strut braces, better tires and better restraints it will probably be a better track car than I am a track driver for a long time.