Looks legit to me. Not like they're all newish bits.
Early 90 roof with vents in the back
County sides and rear door look early
Push button doors, Again look like they're early ones with the county decal.
Rear tub, Bulkhead and bonnet are probably original.
And another set of wings.
Like I say its not like they're all brand new tdci td5 bits. Most parts of that age are readily available on ebay or the like.
Oh I would bet that's built by ebay lol. Just the way its 2 panels from one motor another couple of panels from another, and the fading being identical I would bet matching color panels are from the same landy. Just seems to smart of a job to be random panels to me but I am a suspicious type