I saw this engine recently and couldn't help myself, I just had to have it as there is definitely something about a V twin, ask any Harley rider. After building it I now have a degree in plumbing. The engine is from Chiltern Steam Models, and comes in kit form, and was reasonably priced everything considered. They also make an electric boiler for static engines so as no gas or fumes indoors, at half the price of a normal 3 1/2" diameter boiler. Regards, Gary.