You couldn't part with it, could you?
I personally feel that a De Soto is a class act of that era. They had some advanced features, being Chrysler's 'test the market' line, things like the fluid drive attached to their standard gearbox.
And they look different to the more common Dodges and Plymouths.
Great engine, as blueskies will attest, though a De Soto is more likely a big block than a 218 as fitted to most Plymouths.
I can't see why the front end would be so expensive, either. But I do admit to not having personal experience with it.