Keyboard Case Replacement

Can an aluminium case like tofu60 kbdfans fit in kemove dierya dk66?
Because I see PCB is longer than common 60% PCB

Can an aluminium case like tofu60 kbdfans fit in kemove dierya dk66?
Because I see PCB is longer than common 60% PCB

from what I know, no  since the pcb isn't standard

I'm facing a sitting posture issue because my hands are not aligning straight with my keyboard and mouse which causing pain in my shoulder, neck, and back. I want a clamp-on keyboard tray that can be adjusted on any table. What do you guys think, will this solve the problem? Please suggest some good online stores for this.