If you can find a 2007-2009 stock GT500 with 4800 miles or less for $33K buy it!!--then you will start modding and see that $5K you mention will be consumed very quickly on your new stock GT500 and you will not be close to where my car is HP wise or have any other perfomance/appearance parts that this car has.
GOOD LUCK IN YOUR SEARCH--but please keep any price comments to your self especially if you have not seen the car in person or driven in it.