I have a '72 Dodge Charger with a 318. I recently purchased some old 360 heads for $50 bucks that are in great condition to put on the 318. However I have been told that the 360 heads would decrease low end torque dispite the fact that they would give the car more power. Is that true? And whether or not it is true is it a good idea? And yes they have the hardened seats. The guy I bought them from said they didn't need any work or anything, he said just take the 318 heads off and bolt these on.