I have a 69 GMC K1500 4x4 that I want to sell, but have no idea what it is worth. I bought it in 1977 and am the second owner. In 1981, I replaced the original engine with a 350 out of a 1980 Corvette with 600 miles on it. The new engine has about 40,000 miles on it by now. I moved to western Oregon 15 years ago, so it has some rust on it from the rain. Can anybody out there suggest what it might be worth?