Can't really come up with a guesstimate on the 1974 Z28, LT, A/C. 4-speed Value?? The car is pretty much all original. It has all original body panels, pretty much no rust but his been sitting for many years with one paint change. The paint is very nice now but should go back to its original color. I have been told that this combination on these '74 Z28s is quite rare.