Fuck yes. My granddad had one from new and I was here when he passed away, so never got to realise my dream.
How much does a good runner go for these days?
It's really hard to say, it depends on so many things. Body, engine, interior, desireability of the model, popularity of the colour combo, options.
The thing with Valiants, is that when they left the factory from 1970 onwards they had all of the options stamped on the vin plate. A pretty standard car but with desireable or oddball options could pull 5 grand more.
But the long and short of it is, for a standard Charger (Base model or XL) with a 245, 3 speed and good body (in a non hero colour) you won't get change from $20K. But about 2 of them a year come on the market. You would have to buy a shitter for $5K and spend $15-20K fixing it up (currently what I am doing).
Sedan, you would pay half that. For a top of the range big tank charger with R/T E49 options you would be spending $120K (these were high $200K in the height of the boom).