Not Ranked
Of the three makes you mentioned, none of them are noted for being extremely true to the originals. IMO the Superformance comes closest of the three with the MKIV FFR and Backdraft more or less even after that. I understand the Factory Five MKIV has some compromises to adapt to the existing FFR frame. There has been a lot written about how the Superformance body mold was developed - basically a mold from a mold from a mold. Don't know much about the Backdraft body origin.
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