Apparently there were more F4U-4s built with 4 20mm guns than F4U-Cs
Chance-Vought Official Site 1685 F4U-Ds were built in 1944
200 F4U-Cs were built in 1944
2045 F4U-4 and F4U-4C were built in 1944 (the C had cannons)
297 F4U-4B were built in 1944 these were cannon only models.
So there were more -4's built than -D's
So we should at least give the -4 cannons, perk tag or not.
And we perk the F4U-4?????
Why? probably because the -4 was the best fighter of the war, at least in some experts opinions.
Notice that the -4 is perked, the PonyD and Dora aren't.
Although I think the Tempest is still the premier MA ride perk or non perk