More F40C's???

I heard a rumor that Metra kept more F40C's than 611 and 614. My friend said he saw an F40C that wasnt 611 or 614 the other day. If this is true, how could Metra hide an F40C and no one see it? Any info on any of this?
Colin

That rumor is false. 611 & 614 are the only two.