Wanting and getting are two different things! But try Hemmings Motor News, (http://www.hemmings.com/),
for several reasons. One is that if one is for sale you will more then likely find it there. Second is that classic car dealers are listed in it. Third, I don't think you know how much money one of these will cost. The forth and last reason that comes to mind is sooner or later you will need parts for it.
Consider just getting the new Boss, it will be cheaper to operate, more fun to drive and be faster. Not to mention easier to find.