The upgrade is certainly possible with the correct part(s). Apple supply these as whole units, so display housing front and rear, LCD panel iSight camera and cable. If you get all that, it will work for sure. Otherwise just an LCD panel might work, you might also need the LVDS cable though. That should be it, but take care taking the display apart, its easy to damage something.
As for the top case, I would guess no. The connectors are similar as I recall, if not identical. But even if you can connect it, the OS will not load the correct drivers as it will ID the MBP from its logic board and load drivers appropriate to the model. I once hooked up a USB trackpad to an external port but could not persuade OS X to load the driver. Maybe you can but its a mod you'll have to do any time you reinstall the OS for sure and most likely any time you update it too. Bit of a pain. Thats assuming it will work at all.