the average person isn't going to want to spend 5600 on a car without AC, Air Bags, etc... no matter how 'clean' the car is. The fact that it's a race base is going to turn people off as well. Basically, you have a 'niche' car that is only going to appeal to a few people. People who probably already have a similar car or don't have that much to invest into a car. It's going to be harder to sell and it's going to take longer to sell.
It's going to take advertising and patience to get it sold. GLWS.