[Trackrash]

I would get a PPI from an experienced Porsche shop.

There are likely a number of maintenance items that will need to be attended to $$$.

Is there a maintenance history and recipes for repairs?

The main issue, in my mind would be broken head studs or hidden rust as this is common on these cars.

The bottom line is, if the car is pristine, and your uncle wants top dollar that's one thing. On the other hand if will you have to spend money on maintenance or repairs, then you can negotiate.

Carefully check the condition of the wheels. Chromed Fuchs tend to have corrosion issues.

These cars can go for anywhere around $20k to $40K nowadays, but I'm not an expert on the current prices.