It's amazing to me that folks want to come in and argue with things that just aren't that hard to confirm though a little research of their own. The recent batch of P51B vs P51C threads being a good indicator.
P51B-Inglewood,California. P51C-Dallas,Texas.
Heaven help you guys when you get around to the folks who manufactured Corsairs under license, or any of the other birds that were built by different companies. Give me a TBF! We only have the TBM! Where's my FG1-D! We only have the F4U1-D! I want a Vega built B17! Ours is Boeing!
It's enough to make ya weep.