Hi Lucas,
Its lack of value here is almost entirely down to the regulations governing taxation. To operate this car in Ireland with a 3.0L engine costs about €1,500 Euro in road tax and €1.20 per litre or €4.54 per US gallon for fuel.

So, this is a 14 year old car which costs a fortune to run, is starting to require replacement of suspension and brake components, has expensive spare parts. I bought it for €500. Nothing wrong with it except for a little rust on the front wings.

The 1971 car I will end up with reduces that €1500 in road tax down to €56 since it is calssified as vintage. If I fuel it with vegetable oil, the savings are further increased. By going old, I also avoid the obligation to undergo an annual roadworthiness test.
It makes for a powerful argument.