I took a picture while at work of the steering rack on a mustang for you. I'll highlite where the bushings are and show you what bolts to remove later on when I get home.
Don't just go replacing the power rack for no reason. If your rack is perfectly fine spend the 15 bucks on the bushings. Besides a new rack doesn't even come with the bushings installed. You still have to transfer them.
I found this out when mine blew the seals.
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Ok here is the way I would do it if I only had jack stands.
1) Park the car on a level surface away from traffic to work
2) Set the parking brake
3) Raise the car one side at a time and support each side with a locking jack stand
4) Lock the steering wheel
5) Get under the front of the car with your assortment of wrenches and sockets. I believe they are anywhere from 10 MM to 19 MM but I don't remember.
6) If you look at the rack you should see two bolts with retaining nuts sticking out the front as in the picture below. You are seeing the ends of the through bolt, on the other side of the K frame there are the bolt heads. Use your wrench or ratchet to hold the bolt while you turn the retaining nut on the front.
7) Once the nuts are off the front and the through bolts are pulled out the rack should sag a little. If you are unable to get the rack awat from the frame you may have to remove or loosen the bolt from the intermeadiate shaft to the steering gear and seperate the two so that the rack moves freely. The rubber bushings on the inside of the rack are whats being replaced.
8) Pull the bushings out and put the new ones in. Then reinstall by reversing the removal proceedure.