There are things that only the man behind the project can understand and get satisfaction from. One thing though, to do it, I believe, requres a lot of tech-know-how and analysis unless he is a Korg staff who knows the specifications of the kybd design.
This man seems to show obsession and passion in his work (kinda equates to obessive passionism) which few in our buzzing country can afford to do given the lifestyle we lead!

Maybe I'll stumble upon a Fantomised Piano the next time!
I am reminded of a retired engineer whom I met months ago who has been spending his life understanding how elecronic/electric stuff works by analysing and replicating them. When I was at his house, some of the music stuff things seen there were an old organ with an attached casiotone panel, a theremin, a zeta violin lookalike...and his most curren project then was to convert the casio DH wind synth to look like a yamaha WX instead of its kiddish sax frame! Hmm, wonder how he is doing now?
Anyway, I just post this to share something interesting with you guys. Enjoy!
Bongman - there's a utube link in my 1st post roughly showing it was done. It looks easy but really requires a lot of hard work.
Cheez - I believe the ports can be accessed from the top cover of the shell. the utube link seems to show that.