I think your 79 is the same as my 81
The bottom cushin has two "V" shaped wire type extentions that go into a slot on the bottom of the seat bucket frame, the top portion of the bottom seat has a wire through the entire back side of the bottom of the seat that snaps down into a clip on the back of the bottom of the seat frame.
The top portion of the seat has two clips on each side of the framework, in back of the seat cushin. They open toward the middle of the seat, I used an the same screw driver with a bend it in that I used to change the "S" spring in the door to get in back of the cushin to release the wire from the snaps.
I'll make a copy of the page from my assembly manual and post it
Bud
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