Late model seats in your A body

Sebring vert seats are all electric, they have to be for the seatbelts to work. Here's the writeup from corvair kid. http://corvairkid.com/sebring.htm
You also need to remember that the belts aren't attached to a re-enforced area of the floor, so you'll need to beef up the floor where the seat bolts in

Dash pad has five small nuts across the top tthat have to be removed, most are hard to get to without pulling the dash, and there's two more on the ends.