First of all lets just say the mileage on that car is amazing. I would buy it in a heartbeat. Especially since my 94 Accord Ex has 198000 miles and it still runs damn near perfect. I agree that modding your car does lower resale value. I guess you could try to sell it higher and then lower the price as needed if you are in no hurry. But I think 4,000 is definatly a fair price.