I was thinking of the IDGB that came into vogue when the Navy got the Seahawk based on the S-70/UH-60 design. That gear box upgrade (IIRC) informed the improvements to the UH-60L gear box .... anyway, Ian, thanks for the link. I suspect most of the upgrade work will take place in CONUS so that conversion job looks to be spreading some DoD dollars to various districts.