Rims Equivalence?

[montrealer]

Here in Quebec, as of Dec 15, all passenger car will have to have winter tires.
I am looking for Rims in order to mount them on a permanent basis, avoiding me to have to remove the summer one and remount the winter one each fall and spring and each year. I have an SVX 1997 on 16" rims, and need to find "cheap" steel or else rim for my winter tires. Does any of you know what equivalence is there on rims that can be mounted on my SVX. What I mean, is, if I go to a recycling yard, what rims can I use? Is a Legacy, Outback, or a Forester or else rims, and what year, will be OK ? I cannot find any original used alloy rims in this part of the world, and new ones are too expensive... Thank's ahead...