The bushings are located at each of the 4 corners of the subframe, you can see them from under the car. It would be adviseable to get in touch with Josh at SHO NUT or the guys at SHO Source and grab yourself a less than $100 set of aluminum subframe bushings, whether or not yours are bad. It's absolutely amazing at the improvement that they make in steering response.
Here's a test for you, and you can do this by yourself or with the assistance of another person. While in neutral and sitting still, open the hood and then turn the steering wheel from lock to lock. ie: turn it all the way to the left and then back all the way to the right until it'll go no further. While doing that watch your engine and see if it moves/twists in the engine bay. If it does, one or more of your bushings are bad for sure. I'll lay $5.00 on it that it does.
I can't say for certain and without a doubt that it's not what krednjen suggest, but I don't think so.
If you're uncertain about things I would highly suggest finding an experienced SHO person in your area that could help you figure things out. There is a very high concentration of SHO gurus in PA, so I'm sure someone will step forward to help you out. If I was closer I'd help.