RLSH700

I personally would recommend just getting a new one. The cost might be cheaper for an older one, but it will not be as fast for that price (unless you drop in a more powerful engine after market or modify what is already in there), it will more than likely need a lot of repairs (those get old and expensive very quickly), it will more than likely use a lot more fuel, have fewer current day luxuries (if that is something that you value), etc. A new Challenger looks so much like the classic that I think it is the wiser choice.