I recently found the build sheet for my 70 ss in the back of the passenger side front bench seat.I had to cut the seat to get to it but it was in perfect condition and the seat needed to be recoverd any way.Has anyone else ever found one in this posistion? I wish I would have known about build sheets in high school (early 80's)when I converted my ls6 Elcamino to buckets and threw away the original bench seat,maybe the build sheet was there. Andy.