Personally I would love a early charger, or really love a 'cuda. but when I mentioned the camaro earlier it was something I would be DD'ing. Yes I am a fan of the old camaro too... but I wouldn't DD one.
I am buying the MJ for my next DD because I want one and it and it will [hopefully] be a pretty easy project. If I had the time and place to build a classic/modernized DD I am fairly sure I would build a 1970 (give or take a year) mustang with a new(er) fuel injected 5.0 through a 5 speed.
I will undertake that build once I get my own place since I would really want to take my time on that one. The mustang isn't even my favorite car... though I really do like it and have had this "dream build" in my head since I was 15. I remember hearing that my aunt might sell her 67 convertible stang that she had sitting in her garage for something like 15-20 years. Needed a bit of work (conv top was damaged, door and/or hinges were damaged, etc) and it was a 6 cyl... but I wanted it for my project. I graduated college to find out she had sold it for next to nothing the year before

I would prefer a 70 but I would have done it with a 67 if the price was right.