There are many distributors for LeroySomers gear boxes, but to order them direct you will need the exact part number, which I do not have, or take the gearbox in and have the staff measure them. The last time I looked, delivery was 12 to 20 weeks from France.
Amel has the LeroySomers gearboxes in stock. Maud just shipped us two. Expensive, but available.
Fort Lauderdale, FL, USA