I have been thinking about the same thing. All of the K-G seats I have removed still had the stock seat pan.Maybe a little electric knife work may do the trick. Yours is a little different style though,looks kind of low in the front,may have to build up a little with some good dense foam.Probably best to re laminate new foam on the whole top inch or more to get a good uniform feel.Will post back with one of mine sometime when I give it a go. Eric