I don't want to influence your decision one way or the other, as it would be a conflict of interest.
However...
IF... You decide to sell your 300, I would like some further details and you could leave a PM or call me with a price. I sent you my cell number.
I have had my '68 300 since I was 13, for about 30 years now. I have taken a closer look at it a few months ago, and I really don't think it would be worth the effort and expense to restore it. The quarters don't look too bad, but the outer wheel tubs are worse, and it could be done, but I think it would be wiser to just find a solid car. I do have a strong attachment to my 300, being as it was my 1st car, but I think Stan nailed it when he said the car isn't going to care if say, it were to get replaced by a long lost twin separated at birth... I'm pretty sure just having a decent '68 300 to drive on occasion would give me the same warm and fuzzies that I remember from my original 300 when I was growing up.
I am in no rush, so if you don't make a decision for a year or so, I would still appreciate an option to consider your 300 if you ever decide to sell. I am not in search mode as of yet, so I likely will not have a replacement anytime soon.