I recommend any SC3 with a manual shifter. Of course, your son will have lots of fun with the car, and will eventually tune-it.
The one problem you should look out for are leaks under the block. If you find a car, I would recommand having it checked out at the dealer, and if you have a oil pan gasket leak, either don't buy it or have them sell it to you for Thousands less(At least $2-3K). Check engine lights can also be a problem.
Otherwise, the car is really nice, and you should drive the car more than your son. Enjoy it.