Master Card or Visa ??
So what are you asking here, a rebuild/restore or what ??
If thats what youre asking then it depends on what you want and what kind of money you can spend.
I have restored a few of these old Mopars and the least I ever spent was $5000 and the car had no rust. Though it sold for over $15000!

I have a 69 GTX, its been about 6 years now and its no where near finished , due to time and funds. I'm about $4000 into it, still needs paint, interior, and the motor rebuilt.
Hoping to finish in the coming summer...
hoping!
Good Luck