Clone is a facsimile to an original, like a carbon copy
just not a numbers car or the actual model,
could just be the same body style
with different trim, hood, interior, dash, grill, tail-panel
'like those
sheep that was cloned'
using like a Belvedere body or Satellite or Sport Sat.
to make it/them appear like they were an org. GTX, RR Etc.
but it's just looks like it
some will say
even if it's a real car, real RR GTX etc.
with different drivetrain than org. came in it
Hemi vs 440/383-400 or 6bbl/Six Pack vs 4bbl or Crossram vs 4bbl/2bbl etc.
many many scenarios could be "cloned" or tributes
no harm no foul,
IF IT'S disclosed, that it's not a real RR or GTX etc.
or as long as it's not some sort of fraud/scam
to try to attempt to say 'it's real'
or the dash/vin/rad support/trunk surround #s
fender tag "fraud" (like the 4dr 'cuda) & stamped #s on the car &/or block etc.
have been ground/removed-changed/welded in &/or altered,
trying to deceive/defraud the buyers/public, thinking it's real
some shady people out ther today
IMO a tribute could be considered the same too
splitting hairs
with all the restos & re-bodies going on,
or completely changing every piece of sheet-metal
except for maybe the org. frame structure underneath it
changing to a date coded or even NOS parts
is it still that org. car, some will argue that's not the same car either
it's only original once
Hell many of the quality/professionally done
resto-mods/pro-touring cars are worth even more
than a fully restored OE version, using NOS parts
many are nothing is numbers matching, except for the Vin/body/reg./title etc.
Many many more of these cars had day 2 mods,
the week they were off the lot
or the day after, hence the term 'Day 2',
wheels tires headers exhaust gear changes interior bench to buckets etc.
auto to manual etc.
than the all still org. cars "survivors"
these cars, many were or are still being drag raced, hot-rodded
a lot of them were blown up, crashed or wrecked rebodied
&/or lesser model parts installed, like a Belv. on a Sat. or RR/GTX etc.
some even still have the same #'s matching block trans rear housing etc.
some took out the OE stuff & put it in a corner
(forward thinkers ?, maybe had a crystal ball, or just got lucky or just hoarding

)
they are many 50-60+ y/o cars, lots of stuff have/has been changed
they didn't used to be collector cars
at one point they were just old cars/used cars
many
had very lil' value... were gas guzzlers in the 1st gas crisis
I bought them for $150 to $1500 'all day long'
or had them given to me even
the lady of the house/gramma or grandpa/heirs, you name it
just wanted them gone
(many were considered an eye sore)
back in the mid-late 70s
not any more
Opinions will vary, that's mine mine