HP Envy 15 as091 Keybard Replacement and Display Cover Replacement

[Mr_C2]

I have an HP Envy 15 as091 that was dropped and dented the aluminum case in multiple spots.  There is no damage to the machine in terms of screen or internals.  The aluminum case is bent in multiple places.  Bottom right of keyboard, and top left of back cover of the display case.  I have procured the spare parts- 857799-001 which is the keyboard, and 857812-001 which is the back cover.  I have already replaced 857800-001 which is the bottom case.  Essentially what I am trying to do is replace all of the various cases back to new.  I cannot find repair or replacement instructions for either the keyboard or back cover of the display case.  Can anyone point  me in the right direction as to how to replace either one of these pieces?  From my review of the Maintenance and Support manual, it seems like you need to remove all of the internals in order to replace the keybaord, but that's a best guess as most other HP keyboards "pop up" and after a few ribbon connectors, you can put it back in ,  On the display back case, it seems that usually the entire display is spared as one piece,  That said, there is nothing wrong with my display and if I can replace the back cover of the display case, it is orders of magnitude cheaper than the entire display.  Help is much appreciated.  Thanks HP community!