What Size is this Connector? (pic).

This is one of the oil cooler line connectors from my 1994 350. I need to find a connector that will fit this thing and hook it up to the -10 AN Katech LSx oil cooler adapter. Any ideas?

First question, what size is this thing?
Second question, where can I find a connector that goes from whatever size this thing is TO a female -10AN connector?
Third, anyone else run into this?

http://i264.photobucket.com/albums/i..._0430small.jpg

Thanks!

3/4" pipe male I think. Maybe 1" pipe.