Boy, after looking at a lot of 330’s (67-68 vintages) I want to say that it is because it certainly resembles a 330. However (from those yeas) the hood is not large enough (and shaped a little differently), there is not prancing horse emblem in the grill, there are no “Shark Gill” vents in the front fender and the badge is circular on the hood (even though you cannot make out any symbols in it).
But, man there are a tremendous amount of similarities, though.
Is this some rebodied (or at least somewhat modified) 250/330….?