Would any of these Magnaflow exhaust tips work on the Cayman? They're double-walled, T-304 polished stainless steel, and about 1/3rd the cost of OE equipment.

http://www.magnaflow.com/02product/shopdisplaycategories02.asp?zone=main&id=267

Exhaust tips are pretty low-tech...let's face it - it's just a collection of small welded tubes that Porsche charges $400 for, so as long as the Magnaflow tips are the same rough dimensions and fit, I can't imagine they wouldn't work.

Thoughts?