pull the hole eng clean it and the trans and put it on e-bay or craigs list for less than 1k and sell it fast do the to everthing that can be saved. make it a fun project. head and tail lights turn signals all good complete doors seat if power are good just sell for cheap air bags good?
convertable top good? sell it all and take lots of pics
rims and tires?hell i would even sell the spare and through the jack in for free with the spare

You won't get nearly as much as you think you should when donating.
Do you have a place to put the car as you remove parts? Some cities don't allow that if the car can be seen from the street.
Searching Ebay motors will give you an idea of what parts are common and their prices.
Once you take the 'good' parts off, you'll probably have to pay a salvage yard to take it. That's how they make their money. And you'll need to have the car towed there.

maybe you can find a similer car with a bad engine or transmission cheap swap part to make one good one and sell the rest for scrap metal