Thanks for taking the time to comment! This is exactly what I want to do! I just found his build online, he did an incredible job! I can't find any dimensions of the Ram 1500 heater box online, I'm going to head to the junkyard and see if they have any pulled to check measurements to see if I can tuck into 64 Cuda area. Do you think the Dart and Cuda have similar space behind the dash? In photos it appears the Dart dashboard is a little larger in depth, but could be deceiving.