I've had a Plymouth Valiant Signet 200 2-door sedan for decades. It was my first keeper car (I keep trying to forget the '64 Corvair I had for less than a month). I took that car all over - even to Portland, Oregon. Did just fine. Eventually it cracked along the base. Probably from driving it up to the ski country with diluted coolant. That was about 30 years ago. I fixed that with a couple handfuls of Iron-tite plugs. Still should run just fine today, although I admit I haven't run it for a few years now. The crack block can seep a little but not much, and the seepage stops once the block warms up. BFD. I also have a spare block to install in "Gertrude" should she ever need it. She has a 904 push-button transmission, as well, which I had rebuilt once and it works great. At least the last time I drove it. The cool thing about the 904 is that you can bump start it. Second gear, I think. And I've done that!
Probably this spring I should renew the reg and collector car insurance and take her on a little jaunt.
I also had a 79 Dodge pickup truck for about 10 years. Finally the motor gave out and I junked the thing. Probably a mistake, but I was too busy to fool with it. It probably had a 318 motor, and an automatic, although I don't remember the transmission number.
Chrysler got a lot of disrespect from the Chevy and Ford guys, but IMHO the Chryslers were well engineered, and would last a long time if properly cared for.