Some might call it a problem, but I have a couple, or a few.

1971 A65 Lightning (Taken at the Bonneville Salt Flats)

[Linked Image from images.i.thechive.com]

1968 mongrel project (C15/B50/441V)

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1953 Competition Gold Star (with a 1950 ZB33 engine)

[Linked Image from images.i.thechive.com]