Looks like related to the Tartan Twin, originally sold in USA by World Engines.
Look up Tartan Twin engine.
https://amablog.modelaircraft.org/am...n-tartan-twin/
Derived from an Italian powerplant for portable power tools. Also, as a single cylinder version .
Supplied in glow and ignition versions for methanol fuel.
Used both Super Tigre carbs and Dellorto pumper carbs depending on version.