I still need to make a proper connection between the boiler outlet and the engines. I plan to use insulated hard line from the boiler to a port mounted at the base. The base port will have a connection flange with the same on the engine bases. I’m researching small disconnect devices to allow quick changes of steam devices. Fish tank hose is not a great material, but I wanted to try out the boiler. Need to sketch out some options to decide what would be functional and not objectionable looking. Always looking for suggestions.