I really don't know the answer to either. Certainly Capote was a huge influence in Lee's life and inspiration in her writing. However much, if any, he contributed directly to the books is unknown to me. As for when the draft was written, I've read that it was her first go at it and that she was sent back to the drawing board after being told that the flashback scenes were the best parts of the book. No doubt the flashback scenes (Scout's bra, Scout on the water tower) are great, so I think that's believable. On the other hand, the GSAWM has such a great final message to me that it was either 1) amended throughout the years or 2) just truly an empathetic, born of one's own blood, ahead of its time work sixty years ago. I will be very interested in your take on the final scenes. As someone posted earlier, no man lives up to the ideal named 'God,' and I would like to hear a preacher's take on what Scout's image of Atticus is and becomes near the end of the book. (I know I've said a lot, but trust me, I haven't spoiled the rising action or climax.)