I doubt it. I just own a garden variety GT/CS now but I venture a guess that the memories of your Shelby would far outlast those of the Mach 1.Lol,you can only imagine how many times I have heard both of those comments.And your also correct,they are both awesome cars,but at the same time completey two diffent vehicles.
We all know how we sometimes question our decisions after our actions.I have had a variety of mustangs over the years but never a Shelby ,just hope I dont regret the choice