Dad's 340 Duster

When my Dad passed away in 2002 his '71 340 Duster was ready for paint and to be put together. He raised me a mopar fan, took me to shows and rallies every year. We talked so much about the Duster, and when I bought a 67 Valiant as my first car, the bond was hardened.
My Dad's Duster is still in peices and unpainted. Plus my brother-in-law lost the original motor while he was storing the car.
Today the car is in storage. For reasons unnecessary to speak here, I have never been able to have the car finished. My Dad went and special ordered the car the day he turned 16, as he had saved the cash. He and I are the only owners. I am at risk of loosing the car. I am permanently disabled and live with my disabled Mom.
I am putting together a fundraiser to try to gather the money to put the car back on the road. I intend to use it as a daily driver. I can't seem to get a handle on how much money I would have to raise to put it back together. It needs a motor, glass, paint, disc brakes, power steering, a radiator, etc. I have the interior and it's all in good shape. Some things were completed in the late 90's that may have to be redone, like the chassis, rear end, and chrome. I have to save my Dad's car. I would be broken if I had to sell it. What do you all think I need to raise to finish the project? I've read anywhere from 15k to 40k, and beyond. It does not have to be a show car. It does need to be drivable. I don't need a ton of hp, hopefully I can get 350 to 400 hp to the wheels when it's all said and done. But that's if I can raise the money and find a credible and fair shop to do it. So how much should I try to raise? Unfortunately, I have nothing to add to the pot.