I used this site to compare wheels specs to see how they would fit compared to stock, or compared to other members setups if I have good pictures and specs from them.

http://www.rimsntires.com/specs.jsp

I also love the Chambers and was looking at their 15's on Jegs site, but I think that with the -19 offset they would stick outside the wheel wells to much, at least from how I understand the comparison from stock to that setup.