Your best bet would be to examine assets that do something similar to what you want to accomplish. This will give you the basic format for the config.txt and possibly a script to handle the loading and unloading. Then you will need to use PEVtools Attachment Maker to add attachment points where you want them. This will take some time as there is a learning curve to the process. So far as I know there is no tutorials for this. Note that this may completely replace the Multi Industry or modify it, very complex stuff.