https://bringatrailer.com/listing/1973-porsche-911t-8/
The markets dipped but the reality is your vision is not a million miles away from this. Swap the wheels, get rid of that contemporary blingy 911 badging on the deck lid and take better pictures.
It's a buyers market, in which your car is presented badly. But a running driving, rust free oil flapper should not be a hard thing to sell.