I have those rims and tires because the ones that came with it were cracked and tires were bald, so I went ahead and got the ones that will be on it after I finish redoing it as a Mad Max Interceptor. Don't worry, the car is not as pristine as it appears in the pictures. If it was as good as it looks I would probably have more reservations about doing it.
Here's the site I am working on about it.....
As I take the car apart I will be posting pictures of the trouble areas and all the progress.
Years down the road if the exchange rate between the US and Aussie dollar get as favorable as it was in the 1990's I would like to get another to restore to original condition or probably make a GT clone. But which to get, an XA or XB? These cars are incredible!