Quest used the fins in the old Tracer kit, but looks like they may have dropped the fin unit as well, as I see no current kits, or evidence of the fin unit on their website. There was also a small a parts tree for customizing, I sent an email to Quest on it, and they said "That is not one of the parts sent over to us" When they joined Aerotech. These same parts can be found in the old MPC Taurus kit.

I will reach out to Jack and see if he is interested.

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