'62 Cj5 Seats

Hi, I have been searching all over and I am still a bit confused. I wanted to replace the seats in my '62 CJ5, they are in great shape but not very comfortable. I would like to keep them in great shape and swapping them in for shows or something down the road. My smittybuilt seats just came in yesterday but now I see I should have taken a closer look at how the seats mount in the Jeep. I thought it was similar to everything else I have worked on but these look to be integrated completely with the frame. I am trying to keep this jeep original looking but functional and put her to use going camping and exploring with my kids. I have not been able to find details frame modification or front seat swaps for the early CJ's. If its extensive modification I would just grab another frame to put the new seats on so not to butcher these.