What's my problem?
You have a car that appeals to a niche market. It will take a while to sell. Plus, as others have stated, the description is a bit "lacking". I'm not criticizing the car, you just need to SELL it, not just post it for sale.
It took me a month to sell my 1966 Barracuda. I got lots of responses, talked to a lot of people about it, but nobody pulled the trigger until that one right person found the ad. Mind you, this was a car that would turn heads in traffic, but nobody wanted to bite for a long time.
Here's my ad for reference:
http://www.forabodiesonly.com/mopar/showthread.php?t=292104
Good luck!