You're welcome. I'm finding it interesting. Some more background: it seems Coppola commandeered a corner of a San Francisco coffee shop, had this huge binder and sat all day every day banging away on his manual typewriter. He typed about like I used to: lots of misspellings and typeovers.

Ages drawn from the list of characters: Vito 55, Mama 50-55, Sonny 32-35, Frederico 30, Michael 25-26, Connie no age, Kay 22-25, Tom 35, Luca 55, Clemenza 53-55, Paulie 26, Lucy 22, Johnny 30, Genco 60s, Sollozzo early 50s, Tessio 50-55, Moe 40s, Al 30s. Coppola wrote "Carmella" in for Mama, so it seems that name either came here or from Puzo's original draft.

Some chronology:
Late 1946 (maybe early 1947): peace conference
Late 1950: Michael and Kay reunite
1955: meeting with Moe to end of movie.

Coppola mentions Eddie Fisher a couple times with respect to Johnny Fontane. He had the cuckold angle that Johnny had in the novel. On the other hand, he refers to Johnny's movie as "From Here to Eternity."