B body interchange question.

Not without a lot of metal surgery. The share the same frame rails but that's about it.

But for the price of a '69 Charger you could buy a '70 Satellite, buy all the bolt on stuff to clone a RoadRunner, and have a pocket full of cash left over.
That's what I'm looking for. The *** end looks way bigger on the dodges. I know it's worthless without pics, but I'm figuring this thing has gotta be worth at least $5k parted out. It's a complete clean car. Maybe $10k, I honestly don't know. Right now we're both sleeping on it. I offered $3k cash (because I saw that's what the grill/headlight assemblies go for). The guy has a clean title too. This is uncharted territory for me. It looks like an easy restore. What's a basic blah charger worth?