I've wanted the engine to this for some time now, but they are quite rare.
This kit might have something to do with the engine's short production run.
987190001 Subaru 7HP EX21 EFI Diagostic Software CD Cable Kit New | eBay
This kit might have something to do with the engine's short production run.
987190001 Subaru 7HP EX21 EFI Diagostic Software CD Cable Kit New | eBay