A/A Engines is now importing the BZM 27cc gasoiline Marine engine. The complete engine is available with exhaust header, tuned pipe and muffler or without the tuned pipe and muffler. Contact "double-aceracingproducts.com", Ron Shaw, or "email@example.com" to order one of these engines. These are beautifully machined engines of the highest quality. I saw these engines run at the NAMBA Nats this year and the boats ( monos ) were running in the low 60's MPH with the 80 db pipe and muffler. Quite impressive!