I know it is difficult to value something without seeing it. I have a 68 Z28 that I bought 5 years ago, a project. I know the history behind the car since 1970. The original engine is gone. Someone local seems to know the whereabouts of the engine, but no show. When I bought the car it had been in a barn 5 miles from my house for 33 years. Put there in 1981. The car had new GM quarters installed and then parked. It is a very solid car. Car was complete when I purchased it. The body is on a rotisserie. I did replace the trunk pan and the passenger side rear floor section. Pretty much only rust on the car. It does have the original Muncie and rear end. 4:11 12 bolt. Both completely rebuilt. I have a 69 DZ block, all machine work complete. Winters intake with holley carb. Told original, but not exactly sure. It would not take a lot of prep to get the body ready for paint. I have a new Dynacorn subframe. The original was damaged at one time, and I did not trust it being straight. I will be 70 this summer and have lost interest in finishing the project. Just wondering what a solid car with history would be worth? Thanks in advance.