As far as the gas prices go, this page I found is very interesting.
http://www.fintrend.com/inflation/im...tion_chart.htm
Basically, what it shows is that back in '69 durring the height of the original muscle car war, gasoline cost the equivalent of $2.00/gal. considering that modern muscle is getting at least two times (in some cases up to 4x) better mileage it is now just as cheap to fuel a new Mustang GT or Charger R/T in real economic terms as it did back then.