I run an HHR fan on a 26" radiator and just fabricated some brackets to mount off the fan shroud bolt holes. My car may get to 180 on hot days, and it will blow rags and towels off my firewall when it's on. Best bang for your buck at $57+shipping from rock auto. No butchering was needed to make it fit.

BTW a buddy of mine used a mercedes fan on a B-body and the fit wasn't so great and it didn't last as long as a german engineered component should.