post on parts wanted..... after u posted enough ..

rx71 is correct. These cars are not yet big enough business for an aftermarket company to be able to afford to produce and sell OEM style aftermarket replacement parts for things like the steering wheels and interior panels. You either pick over the bones of other cars that have been parted out, looking for items in better condition than what you have or refurbish your existing ones. Might try Craft Customs out of TX to get the wheel and knob re covered. Custom Steering Wheels | Wood Steering Wheel | Repair | Restoration

I had them do this for a 79 Limited (Blk leather instead of Brn) with good results. You can maybe try and have the carpet re dyed, or there has been a place mentioned here on the forums several times, that sells a replacement carpet kit for Rx-7's. Forget the name, do a search and I'm sure it will come up