I have no idea, really. Tweets are usually too easy to distinguish, as far as faking them goes. And I am someone who knows all the reddit frontends, website archival sites, reddit comment archive sites, torrent sites, a serious amount of what goes on in darknets actively, twitter frontends and what not, and I do not know about twitter archival sites. Inform people about them if they exist, and they might thank you. Until then…