Yes, I saw that the bed floor was not printed, but that's the easiest part to scratchbuild/modify from another kit (especially since you already did the wheel tubs separately). I think the bedsides/tubs would be a GREAT seller, I would buy two pairs to start
http://www.modelcarsmag.com/forums/index.php?showtopic=34956&hl=longbed#entry356402
http://www.modelcarsmag.com/forums/index.php?showtopic=34959&hl=poll&fromsearch=1