I dont believe the "Silverplate" 29s are modeled.
Poem about the 509th on Tinian:
Into the air the secret rose,
Where they're going, nobody knows.
Tomorrow they'll return again,
But we'll never know where they've been.
Don't ask us about results or such,
Unless you want to get in Dutch.
But take it from one who is sure of the score,
The 509th is winning the war. ----
From what ive read, it was writted by other B29'ers responding to the fact that they (509th) were never on many bombing missions over Japan.They would take off, and come back and not be able to talk about what they were doing.