There are many cars that appear fantastic that are hiding many sins, some done by PO's that the current owner has no idea about.
A 1750 once turned up that had just been restored that looked stunning, a closer look showed that a jacking mishap had dislodged a chunk of bog from one of the sills ... and yet this car looked like a 100 pointer. A few months later this car was in a concourse. I still wonder to this day if this area was repaired with more bog or done properly ...
We also though have to respect that some peoples pockets are not deep enough for proper repairs or they don't have the confidence to do them themselve, or simply don't want to ... and also most people only own a car for like 5 years max.
One of the reasons why buyer beware when looking at what appears to be a nice GTV/GT, etc. ... atleast with my car I knew what I was buying.
Pete
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ps: Remember it's all just opinions

'71 1750 Series 2 GTV: http://www.alfabb.com/bb/forums/showthread.php?p=208078