WOW! My old Dad dropped a bomb on me...

I, personally, would have some hesitation taking it. I would wait a bit until you can see hm in person to discuss it. Of course, I would be overly appreciative until then but would want to make sure that it's not out of guilt for not getting your Dart "where it should be". The 10-15 years before my father passed, he became more concerned that he was getting older and could no longer help his 6 children like he used to and tried to compensate with generosity and materialistically. I for one always told him there was no need for that and that his love, support and kindness throughout my life was enough and that where I was in life and what I had accomplished was all due to him. If I were you, I'd try to make sure that it was "all" for the right reasons and go from there. I see everyone so far is very willing to take it without any deeper thought behind it. If you do take it, I would think about how to repay (financially and supportively) your father for it. Financially, you could sell everything you have in the Dart and give it to him for his Challenger project along with sending him so $ when you have it (as if you were sending it for the Dart) or you if you don't think he would accept it, buy pieces for his Challenger project. As for being supportive, I'll leave that up to you. Good luck with your decision.
Very good thinking... Today we decided that I should give him my Dart for the RR, and then I'd send him 10k over the next year or two for the rest... I have like 18k into my car mechanically, so there's some really great parts on it...

That I think will make us both not too guilty, lol :) His friend just pretty much gave him a 70 Dart with a perfect body, running n driving, so he might pop all my parts on that car and sell my heap...

I am going up there to help him clean out his storage unit in October (which is stuffed with only car parts), and also clean out the whole downstairs of his old place that he used to rent, that his buddy is REALLY wanting him to finish moving out of from a year ago...

We are also gonna go on an ANTELOPE HUNT while I'm there out in Montana!!! Super awesome :)

Anyways... I think we hashed out something livable for him, and a whopping blessing for me, so life is good! praise the Lord :)