Thanks for the info provided to my earlier post.
My new question is were there ever factory rally wheels made to fit these wagons?
I would also wonder if any other GM wagons had a set of rallys available.
I have seen Buick wagons with aluminum styled wheels and I thought I've seen them with Magnums also.
I would like to keep the wheels in the family so to speak.
Thanks in advance for your help and I hope I don't bug everyone to death with my questions.

 

You can use truck rally wheels, they will fit. If you want stock aluminum one the Impala SS had them.

 

The late 80s Custom Cruisers had an optional aluminum "turbine-style" wheel from the factory. I believe the same wheel was also used on the Buick wagons with different center caps.