Need lead on shower fixture


I have a non-Amel boat, but saw on an Amel a
single lever shower control fed from two pipes about 5"
apart with an external (inside-the-shower, not
in-the-bulkhead) bib for a shower spray hoze. Evidently, later
models do not have this arrangement. Does anyone know of
the manufacturer of the single lever control that I'm
looking for? Model No. would be wonderful! I'd like to
convert mine from two-knob to a single lever control.
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