What to price a 1970 Super Bird at my friend is getting in a multi car trade

Here is the story, my friend is getting a 1970 Super Bird in on a multi car trade.......It was his high school friends original car back in the day who passed and the son got it in the estate, the son is a Chevy guy so he is trading a couple high end Chevys and some cash for the Super Bird. The Son Left the car in his fathers name to my knowledge keeping it a one owner car, but like I say the father has passed now......this is far too expensive a Mopar for me to wrap my head around, The car was painted once $10,000 about twelve years ago with one of the doors being replaced at that time, it is a 440 which I imagine they all were....I have a picture of the car I can send as well. I wont post my number here though since I am not yet sure of the forum rules. So perhaps Ill read future posts......I believe my friend will have roughly $80,000 in his trades and cash value into the deal......also he wonders should he just make efforts to resell it or send it somewhere for a professional restoration and then take to a big ticket auction house?......Thank you for your time