I Lean more and more towards this. One is a two-door post (pretty rare) and the other is just a basic 4 door, but has a VERY muscly 318 in it. We also have a brand new slant-6 that we bought in the late eighties that we never got around to putting in to the 2 door. My hubby is quite the gear head, has multiple roll around tool chests, ALL of them full of tools, plus an engine lift, etc. We even have a spray booth in our shop for a quick paint job if needed! I was all for selling them a couple years ago, now not so much.
Both of those Darts are excellent cars and I’ll bet they are paid off. I have restored a few myself over the years. Both engines are bulletproof and you will be able to buy aftermarket parts pretty much forever for both. All the slant six engines I had got 25 miles to the gallon on the highway, yet they were strong enough to easily pull a trailer with them and still get 16-18 MPG. A newer car could not do much better in the real world. And here is the best part, in almost every state as I understand it, they are emissions exempt because of the age even in California. :)