Good evening! First, sorry about your garage fire! I can't imagine how that makes you feel. I installed a Dakota Digital in my '70 Challenger. Slightly different that your '71 B body. I looked at the instructions for your dash kit and it is pretty close to my install. It is very easy if you have any electrical/mechanical ability. I gutted my original AM radio and put the control box inside so it is hidden. All the other wiring is easy. I love the way mine looks and works. I'm sure you'll love it. The one you are looking at does have more features than the one I installed, mine is the VHX model. If I can help in any way, let me know. Take care, Jeff