The interested buyers (babyboomers) of 66-74 muscle cars are getting older now and interest is withering. I can say for I am one and paying those prices is not of interest to me. I would rather go buy 4-5 hellcats and a couple of vipers than pay $900K for one old car. 10-years from now those 66-74 muscle cars will be way less money as the babyboomers reach full retirement.