Brazilian Dodge Dart 76 (similar to 69 usa)
Sorry Alex.
I lost the interior work picture files that showed all that hard work. :banghead:
I do remember that they were not that difficult to install. I did one at a time so I had reference to the way it was done throughout the process. I know your past that but I'm sure you can figure it out with some help from us. You will need a set of hog ring pliers and some hog rings. Hopefully you kept the wavy tension wires (listing wires) that came out of your old seats. If not you can make some with coat hangers or steel rod.
http://www.hotrod.com/how-to/interior-electrical/mopp-9904-how-to-install-front-and-rear-seats/
This article is for a newer mopar but the seats are nearly the same and the process is identical.