[Macroni]

First, I would run this by the S Registry crowd. They are the experts.

Wow, this is a tough one to call as it has many great features which by themselves seem to have greater value than the whole. Recently, a non-matching but vintage correct 1970 S sold in 1 day for $49,000. So as a stock S it would be very desirable.

The RS spec motor in itself has strong value depending upon build and condition this alone can be worth $10 to $12,000. I've seen them sell higher.

The S tub / chassis has value but it needs what you described as extensive restoration. It nonetheless could easily be worth $10,000 to $15,000.

Then there are your goodies, the 15" wheels, H1s, aluminum rear license panel, Let's say another $5000 to $7000. Then the balance of parts which are scarce another $5000 to $7000.

That gives us a value bottom of $30,000 and a top of $41,000.

If I could get towards the top end of this valuation I would sell whole. If I couldn't I would part.