Just about everything Ruf offers is something Porsche won't build......no secret there. Ruf can cater to the small all out performance niche croud.....Porsche as a company cannot do it as easily. It's actually a great combination to have....a factory builder of great cars, and a 3rd party vendor devoted to making them all out if a customer so desires. Ruf gets impressive money for their work, and Porsche doesn't have to worry about a warranty, forgoes engineering/tuning costs, etc. It's a win - win situation for both. A 450HP Cayman would be killer....but I'm sure a $30K (if not more) conversion pricetag will be a bit hard to swallow for some.