Update: I was surprised to get an email from Phil(maker of Lilliput)! Sounded like my email may have gotten into his spam folder.
Possibly a forum member let him know I was looking for him, but he informed me he has (one) Lilliput boiler left! and it could indeed be finished into a steam engine.
He is "retired" and I don't know how long it will take, but I would be Honored to be the keeper of "the last Lilliput"
Whenever it comes, I will be happy to make a thread about it.