I have heard of the red fin unit used in some Screaming Eagle kits, but have never seen a kit with one.
I had two Eagles in the past and both had blue fins.
I believe that the red fin unit was used with some other kit and they used up the extras this way.
Might have been one of the "Stellar" series.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !