It's possible to repair cracked and faded automobile leather as a DIY project. I used a professional kit I purchased myself ($1000+), which I plan to use for my detailing business, but for about $140 and 8 hours of your time, you can restore your leather to like-new condition. Spend an extra $50 for conditioning oil, and it could be even better than new. There are many retailers online who sell DIY kits, but I don't know which to recommend; just do a Google search.
Driver's seat before:
https://home.comcast.net/~rrkt...0.JPG
Driver's seat after:
https://home.comcast.net/~rrkt...0.JPG
Steering wheel before:
https://home.comcast.net/~rrkt...0.JPG
Steering wheel after:
https://home.comcast.net/~rrkt...0.JPG
Also, I have found that severely corroded "pie pan" wheels can be repaired on older Qs. First, use a strong acid wheel cleaner and steel wool to scrape the dirt and brake dust out of the spokes. Acid wheel cleaner can be purchased from topoftheline.com. Do not let the acid rest on the wheel for more than 120 seconds without hosing it off! Then scrub the center caps with a green scotch pad and paint them with rattle can paint.
Before:
https://home.comcast.net/~rrkt...0.JPG
Afterhttps://home.comcast.net/~rrkt...0.JPG
By the way, the car is for sale. See details here:
https://home.comcast.net/~rrkti/q45.htm
I don't intend to sell the car in this particular post, but direct you to this URL to give you an example of a web page format that I have found to be very successful in selling my used cars. Always, always provide as much info and pictures as possible when selling your car. It fetches a lot more interest.