1976 cost/value -helpppp, in a jam Options

[lostmybaby]

I was the happy owner of a 1976 914, till someone in a 1998 ford escort decided to hit the side of the car, right behind the passenger door, RIGHT at the engine compartiment and rear wheel. My mechanic feels the damage is, gulp, beyond repair. BUT, the car, like before, RUNS GREAT. Mechanically, the car was in GREAT SHAPE before the re-arrangment, now there may be a frame related problem etc. SO, I'm calling all 914 folks out there to help me in my battle with the insurance company. TOmorrow at HIGH NOON I will be told HOW MUCH THEY Feel the car is worth and how much they are going to give me for the massacre caused by their wonderful driver!
What is a good/average price to replace a mechanically sound 1976 914??? This car hummed, strutted, ran, and pretty much confused everyone with the lack of problems I encountered. I owned the car for 4 years and put over 25,000 miles on it without a hitch and was on my way to driving the car until I couldnt raise myself out of the front seat.
SO again, anyone, what is the price I should accept to replace something that is essentially irreplaceable???

HELlllppppPPPppp.

THANKS FOR THE REPLYS SO FAR.
THe paint was faded and the rear/targa chrome-like molding on one side was starting to losen. Very little rust and the interior -well the seats needed to be replaced, however I had the center console installed. The dashboard had one noticable crack.
I think I'll stand firm and argue for 4k.
Right???