This 6.5 engine would not work on a standard bicycle frame. Think what would happen if your bike broke in two at 50 or 60MPH. A custom built heavy duty frame would be needed. This engine can be moded to produce 10 to 13HP and when mated with a torque converter can be used on motorcycles or high performance gocarts. A push trailer is a possibility, but may be over kill for a bicycle. Some have tried this and later converted to the 2.5 HF engine. Somewhere I have seen a specially built bike with pedals using the 6.5. The owner stated that it goes over 60MPH and is scary at that speed.
Tom