I've got the basic parts drawing done, but I don't know when I'm going to get to finishing it. If you'd like to grab what I have so far, here it is: http://www.geneb.org/acesii/aces ii seat.dwg
You'll either need AutoCAD 2010 or DraftSight(free) to open this file. It was drawn in a metric scale.
The F-15 seat base profile was taken from this model: http://www.diy-cockpits.org/acesii
I haven't added the lower seat details for either version yet. There are probably another four or five parts that should be added. If anyone wants to add those parts, I'd be happy to host the result.