[Perfectlap]

Yes I understand that air-cooled are a lot more wrenchable. But that's not really what I'm saying. DIY and very expensive parts are not a good mix with the current generations. I call it the iPad generations. They just didn't grow up tinkering in the garage. They expect things to be all done for them, they consume nearly perfect products layed out on a silver platter. Once the current middle-aged crop of Carrera die-hards are no longer the meat of the buyer curve, who will keep bidding up $12K heaps like the one TheStone posted? I wonder how many under 30 year olds would choose an air-cooled 911 or 993/964 over a 991 Turbo or GT3?

And as it now, even finding a reliable and well-respected indy to work on even a water-cooled Porsche that's out of warranty is a matter of handful of shops in any state. Here in NJ where we have a ton of Porsches we're talking 2 or 3 that have been around for at least 10 years. And I don't see many new shops opening up.
Those parts will only be getting more expensive and the specialized labor to work on the cars will stay limited. This is going to reduce the pool of interested buyers to those who can simply buy turn key cars or those with the tools, time and space to DIY (a minority). So basically the best,low-mileage, Carreras will do well as far as market value. Particularly the truly limited production Carreras. But most don't fit that bill. So if they experience a spike during the market ups and downs you definitely want to be a seller. Buy on the dip and flip on the bounce back, just like a house.