Pre Travel

Post Travel with keycaps removed (thanks Fedex):


Anyway I was reading up on posts taking about being able to swap early model m top housing on model F-122's and was wondering if anyone here has actually done/tried this before and if its even plausible and if not what can I do to properly repair the current model f housing I have.
Imagie of the M replacement case I bought:

Source of claim of compatibility with early M cases on model F-122: https://geekhack.org/index.php?topic=49313.0
Though they talk about the modifications but don't quite specify (or at least don't show pictures anyway), such as if I need to use different screws (either from the original model F or M screws included), etc, sorry if the post seems a bit vague I'm mostly nervous about the whole thing and this is my first "big" project.
Anyway thanks again for the reading this nervous ramble, looking forward to hopefully getting this thing up and running nicely.