Time for new engine in 72 Swinger - What Would You Do?

Threw a rod over the weekend, engine is a goner.:banghead: (yep, coolant and oil are mixed, the whole 9 yards). Am mostly done crying now, time to decide what's next. What I'm left with is a sweet ride valued at maybe $15k-$16k in today's market - before the blowout of course. I had been planning to put it up for sale next month (Murphy's Law, yep). I still need the $ so need to get back out of it what I can. Some facts:
- Car is new to me in last year from a trade I did - I have probably only put 1000 mi on it.
- 45k actual miles on body and interior -- really nice original interior and top, super clean body, fresh paint, shiny crome.
- Prior owner did a nice restomod performance build - is (was) a 360 stroker, 727, Auburn posi rear, disc brakes, air shocks, trans cooler, pypes exhaust, sway bars, etc., etc.
- I'm know a lot more about 60s-70s motorcycles than I do about cars - new to Mopar.

What would you do in my shoes, given I'm still going to need to sell? Would you spend $5k (I can't go more than that unfortunately) on a new crate motor (and if so, recommendations?)? Or find a shop to do a fresh $5k build? Or try to sell it as a really nice "roller."?

Thanks for your advice. Here's a shot of the Dart: