This is a pretty difficult task. You'll have to either use the frames from your stock rear seats or get another set from a junkyard. You have to open the seats up and remove the RSX seat foam and mate it to the frame of the Integra rear seats. The bottom mounting locations are the same, but the top ones (to lower the top portion of the seat) are different. Once you mate the foam and clip it all back together, throw the foam/frame back into the RSX seat material and you'll be able to bolt it in.
