sure, I would also struggle to find a proper bike to mount this, although I do have a more than a dozen classic bikes.
But I'm sure I have seen nice bikes here at Retrobikes with that Zeroweld stem.
While searching I found this curiosity https://www.retrobike.co.uk/threads/machine-tech-cranks.237290/post-1781293
Back to topic, other billet stems I have sold a while ago (still have Kooka, Modolo, Fred Salmon and others with cut outs)