on the challenger the t/a was usually the 340 six pack cars,and the r/t could be anything from a hemi up to a 440 six pack car,i owned a hemi car and also a 440 car,in answer to your question on the ford ,i have seen a few of those back when they was new beat a few hemi challengers,we use to drag race every saturday night at one certain spot ,and there was cars that would come all over including kentucky to drag race with us,in 1973 i beat a 71 challenger with a 68 barracuda,and the cuda was only a 340 car,the challenger a t/a car 340 six pack,i wouldn't say the ford was better though,a lot of it was in the driving,good luck
