Slowspeed, not sure on widths etc but if they fit you would need 2 of these stillages per SOM or FR genset, I think your FR and SOM would be fine with 2 pieces of 3" X 3" angle bolted shortways through the holding down boltholes, this would enable forks to get underneath, I have enough wit (only just) to enable me to position things in a container in a way that would avoid transit damage so don`t worry about them not being enclosed by a stillage. One thing to be considered is that some of the engines/SOMs have wooden (possibly not EPA compliant) trolleys/skids, are these to be removed prior to shipment ?
Mark.