I’m not sure if I’m missing something, but I’ve been collecting all shintaro’s mangas in both EN and JAP.https://mega.nz/#F!qJQF0AwD
There's a nice big rip of the Fantagraphics edition of the first half of Dementia 21 (look for it on Madokami).
I scanned Day of the Flying Head issues 1-4. Plus compiled from different sources Tract and Industrial War and Revolution. I'm to lazy to put them anywhere, but Tract and Industrial War and Revolution are on e-hentai and libgen has the scans I did of Day of the Flying Head.
Seems OP just became a saviour, now that sadpanda is going down.