I am finishing a Toyota-engined Locost (book chassis) and already looking about for my next project. I recently observed a Moto Guzzi engined JZR and was struck by the fact that the front end of the JZR looked very similar to the Locost book chassis, except for the missing front upper chassis member (LC), which is replaced by a bolt-in crossmember that goes in front of the engine. It seems that the book chassis could easily be modified to accommodate the single rear wheel drive, using the Locost front suspension dimensions (A-frames, mounting locations, etc) which has been thoroughly sorted out. I would be interested in corresponding with others who are interested in constructing a Locost three-wheeler in the same spirit as the original (low cost, light weight, proprietary components).