Well like I say, VMF 214 didn't really have any of it's own planes as we may commonly think of happening in 'standard' units - even when Boyington was the CO. They had "pool" aircraft. Take the plane Boyington is often associated with for example: "Lulubelle", Bu no. 18086, an F4U-1A. It wasn't really "his" plane, and he didn;t often fly it...VMF 214 didn't even have it's own mechanics for much of the time Boyington was there- they were Navy men. One actually tried to refuse to extinguish a VMF 214 plane that was on fire, he told Boyington "I ain;t responsible for no Marine plane". I imagine Boyington blacked his eye, but good, before he made the guy put out the fire
But I'm not sure that apart from photographic evidence you can pinpoint what planes were used by VMF 214 at any particular time. Are you sure that they had F4U-1Ds on land? Or do you mean the -1Ds they had on USS Franklin? If so, there is a skin for that in the sim already
Check your skins
Anyway, that doesn't really matter. Any Corsair skin will 'fit' any 3D model we have for the Corsair in the sim. You can take that VMF 214 skin from the F4U-1D folder and put it on a corsair Mk 1 and it will work fine
if you are looking for the classic land-based Blacksheep planes, I don;t see any at M4T. Try browsing these:
http://www.flying-legends.net/php/downloads/listings.php?cat_id=488R0NNC0 has some planes that VMF 214 flew, and at least one is there: "Marine's Dream" which was used at least once by VMF 214. Also included is a blank version with no number or nose art. I bet "Lulubelle" is there someplace too