I'm not sure if they're still active, but there's been a couple group doing something similar for thinkpads (lcdfans/cnmod, xueyao) retrofitting new Motherboard

I'm not sure if they're still active, but there's been a couple group doing something similar for thinkpads (lcdfans/cnmod, xueyao) retrofitting new Motherboards and other components into older chassis. You could maybe try a group like that as a one off. https://www.reddit.com/r/thinkpad/comments/jrj949/x2100_from_xueyao_first_impressions_and_notes_on/ https://www.reddit.com/r/thinkpad/comments/jrj949/x2100_from...