For sale is a full mod ported Cat 5 Manufacturing 30.5 engine, there were sold right here on eBay for years in the $7-800. I’m not sure what happened to the company but I don’t see them around anymore. They were rated for 8-9hp….Get one here for much cheaper, comes with the clutch already installed. Any question please ask and check out my other items for sale. Thanks for looking, sold as is where is !!