I'm going to the wreckers to get some 15 inch wheels so I can use some winter tires that I've got in my garage. I was just wondering if the 15 inch wheels were steel, or did they come in alum also?

You can get some 15 inch aluminum rims that will fit on the bonne I have a 1990 cutlass and switch the rims between cars, the cutlass has 15'* and the bonne has 16'*. Plus they both take the same tire size.
Now they may not be what your looking for but they are aluminum and they do fit.

http://www.friedpoodle.com/cars/pages/Cutlass1_jpg.htm

The old styler FWD Buick'* too had a 15" Alum wheel option!

Good to know there are a couple of options...thanks guys.