Shop around or make friends at a Mercedes body shop. The cars these fit on were the cheapest of the breed with some being 9 years old. They should be out there in a variety of yards.

You could always give Summit a call to pick up an 18 amp Flex-a-lite fan for $359. There are all kinds of fans out there that cost more and move less air.

I never suggested it was the cheapest route to go but it works so much better than all the others I've tried. It's a nice fit too.