If you choose to go the eBay route, the listing should state as honestly as you can where you know the good and bad bits are, then lots and lots of photos. To cover yourself you invite people to view before bidding, warn bidders that they are bidding to buy not kick tyres if they win, and that a non-paying winner will be reported to eBay. Of course that only works if you describe the car honestly.
The problem with eBay though is the amount of sales that don't complete. Excuses like "my great great grandmother thought she was buying a frying pan", or "my dog accidentally dropped his ball on the keyboard in the last few seconds miraculously entering a winning bid" are no substitute for the honesty of a drunk fool who thought they knew better and changed their mind. No consolation when you've just wasted a week.
As were all enthusiasts on here I think it goes without saying the majority want this car saved, just be careful as there is always a minority who don't.