Desirability is an opinion, I have 3 67 Hemi GTX'S. I will take a 67 over a 68-69 any day. If I wanted another in a different year it would be a 70-71. It costs the same to restore no matter what year. You can possibly save a few bucks on purchase of a project.The 67 GTX is not as desirable as some of the other Hemi cars, so the price may be a little lower, but certainly not cheap.