When to say when with a project car....

I agree with everyone on here. Keep it, who knows what the next couple of years will bring you...I a 65 Dart vert that I have had fir 6 years now, like you, no money to put into it as I have my 66 dart and 65 Barracuda. And really don't get much time to work on them. I do have them at a friends place and can work on them sometimes...I have thought about selling the vert a few times, but just can't bring myself to do it.....It isn't costing me anything for it to sit..So I would say if it isn't costing you anything ot have it sit at your place keep it