Right, like rawkstar said we sell the old shit and keep the new to are selves. The F-16 is a last generation fighter. We won't pass the F-22 along to anybody. I know a while back Australia was trying to buy a few F-22s and I think ultimately the US said no dice.
The real PAK-FA will probably look fairly similar to the F-22. The US went through all the legwork of making an effective stealth airframe and I'm sure the Russians will put it to good use.