[swamp rat]

I'd bet both the hinges and the latch mechanism are rusted so keep soaking them and try to get the latch moving.. Nice spare tire carrier bracket too. I don't think the build sheet would be inder the seat cover, i have seen pic's of them between the spring backing and foam.

I'm pretty sure when i first took my seat out it had a build sheet in it, but it was really torn and tattered and i couldn't make much out of it so i tossed it.. Now i wish i haden't cause i just didn't know what it was..