So far as I know, the only way to get those bad boys is to buy a new wiring harness. Yeah, I know, $800+ is pretty steep if all you need is a few plugs. You might try calling a few places to see if they have a used harness.
I have been around some wires in my time and my plan "B" option is to de-pin the housings and search for the terminals that snap in. I have seen connector types come and go but the contacts are pretty much the same. Anyone tried this?