How to live to old age in the Mopar hobby

I was looking for a car about six years ago that was reliable enough to get me back and forth to work. I had a family member that passed away and had the dart i have now. They called the junkyard to haul it away and i asked my wife if i could get that instead. She gave me the look like she was gonna kill me and said no. I took it anyways along with my $1500 down payment for a new car. Put a gas tank in rebuilt the carb and replaced all the suspension along with disk brakes. For a little over 5 years ive been putting $400 (the cost of a car payment and insurance)a month into our savings and only using it for my car stuff. Theres a little over $20k in there. Shes never questioned me about a car again.