[Perfectlap]

Nope. For the simple fact that there are a metric ton of garage queens out there with just enough miles to still be solid.

Now if there were a shortage of water-cooled Porsches (hypothetically), I'd really have to know the mechanic or shop that worked on the car.

If we were talking GT3's, that's a different story altogether. Over heating ( and head-cracking?) on "street engine" Porsches would be a concern for me. Point being If the stints are too long it makes me wonder, unlike GT3's, the street versions of all water-cooled Porsches engines will run very close to the limit. So a leak down/compression would be a critical PPI point.