As myself and many others have said, it's down to finding the right buyer, and it will also depend how quick you need to get rid.
4k would be a bargain IMO. If I had 4k spare I wouldn't think twice.
I sold my T reg sprinty a few years back with 188k on the clock for £1,300. The body work was excellent and the engine had been replaced and on 80k or so.
I found a buyer who just fell in love with it. This was at a time when coupes seemed to be fetching around the 1k - 1.5k for nice, low/mid mileage examples.
If you need it gone - sell it at 4k
If you can afford to hold on for a bit and wait to find the right buyer, ask what you truly think it is worth.
It's not like you have that many like this to choose from, unless Liquid is selling his!