now your talking refurbished. i'm talking about left in a building for over fifty years. dry rot on all the soft spots, a motor, tranny and rear end that probably wasn't drained of fluids and whatever else could happen over a half century.
ok, maybe 7500.
Actually, you and I are on the same wavelength here. Replacing hoses, body seals, rubber body mounts (it's a full frame car) and such wouldn't be a strong negative. The gas tank would have to come out and be re-sealed, and the engine and transmission should be disassembled, cleaned and re-assembled, but that's still not a rebuild. Biggest issue would be having a solid interior with original materials. If the car was where no sunlight hit it, the seat covers and interior could be intact...but my guess is they'd be brittle enough that at least the seat covers and padding would need to be replaced with NOS or top quality repro materials.
Two years ago I sold my 1958 Fiat Spyder - it had a quilted fabric covered dashboard, and had always been stored out of sunlight. The fabric was still intact and original, although brittle. Many of those relatively primitive 50's and 60's fabrics and vinyl hold up prettyd arn well if they're not exposed to sunlight.
At any rate, my contention is that turning the car into a low-rider would reduce its value. Its real market value is based on being a restored original with low mileage.