The only real issue is going to be trying to sell it on really - we all know they are well built and pretty reliable, but the rest of the folk out there think they are the old stereotypical temperamental unreliable, expensive, time bomb Italian cars. The recent Pistonheads 'Brave Pill' article is the perfect example of this. I don't imagine we'd see a brave pill article for a similar aged 911, despite the fact that they have a habit of throwing very large bills.
Unfortunately, that stigma comes out everywhere, even on this forum, where folk joke about them being worthless over 70k etc.
It's a real shame, these are such lovely vehicles.