here;s my 2 cents on the subject..i have been in the restoration buis for nearly 40 years. although not cars. i restore antique harley davidson motorcycles for folks. we will leave the "Stupid" money cars/bikes out.. (in the bike world 36 to 40 knuckleheads in the mopar world any factory hemi car or a superbird.)
the magic number is 25,000. you can either buy a 25,000 dollar bike or or car Done. or build the same bike or car for the same 25,000 depending on how much you pay for the beginning hulk.
it's gona cost 25 Grand .if you pay 10 grand for the car/bike ,expect to pay another 15 grand to make it "right"
and then we have the "How Right"factor
OEM parts or AFTERMARKET parts.
but long story short... you can expect to pay about 25,000 one way or the other.. you can cut that down some doing your own labor... but then again your time is still worth something
Pete