JustMe, you have a memory like a hard drive

. Is there anything that's been discussed on these boards that you can't find a link for?

I noticed in your link that the GF2 ending discussed there has the exact same dialogue as the script on the imsdb web site. So I guess that site is reliable; it contains the real script (albeit a draft).
So plawrence, when you say the alternate version has been kicking around for years, do you mean it's been online for a few years? JustMe's link is from 2004; but in it, when Don Cardi posts that he was "going over some old GF scripts," he didn't provide a link. Did he mean he was actually reading a printed script?
And JustMe (and others), there's some sweet dialogue in that alternative GF2 ending that your link refers to. You probably remember it, but I'll post it again:
When 18-year-old Anthony visits his father, Michael tells him, "You've grown so tall... You're much taller than me," to which Anthony replies, "I was taller than you when I was fourteen."

That makes me smile whenever I read it.
P.S. The ending in the film with Michael sitting alone with his flashbacks is much better though. Much sadder and more poignant.