Rocky59 said:O.K, I started with the original seat out of 92 coupe, and the 2004 seat. For the bottom seat I removed covers, took cover from 2004 seat and pulled it over with a bit of pulling and tucking and proding over the foam of the 1992 seat. You will need a good Hog Ring kit (rings and pliers). In the end it look pretty good.
For the back of the seat I started with the 2004 seat. These seats are all very similiar back to 1994. In original cars these seats fold down for trunk access, so they are on hinges which are part of a frame that seat is mounted to. My first step was to remove seats from frame. Then I cut and trimed frame of all unnecessary metal. Sanded any sharp edges. Then took new seats still off of frame laid them and centered them over the 92 seat and traced around them. Cut away foam from center of 92 seat, do not cut all the way through back panel of 92 seat as you will have to bolt the 2004 frame to it. Next step put seats back on frame and then mount frame to 92 seat. If I remember correctly there were existing holes in frame that I used to bolt frame. Then I dropped everything off at upholster with quick instructions how to dismantle, and material used was just color matched with 2004 seat. I hope this helps.