The Matchbox was based on the early prototypes. These differ by having concave wing root gloves with a squared rear end and high fences. See pictures 17 and 20 here in particular and compare a production airframe www.warbirdinformationexchange.org/phpBB3/viewt...

Warbird Information Exchange • View topic - Grumman, the people that made the planes 12 SEPT 2010

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Also, the original Monogram kit was of this variant.

Cheers- good to know, and thank you for the link as well! Still determining what to do with my pair of Hase Tomcats.