Here is an album of pictures of Allen's incredible 374cc Six built by fusing two Yamaha FZr250 engines together.

Most parts he made in his home workshop, including th egorgeous frront hub machined from an aluminum billet.
He also made the tank, seat and aluminum fairing using just a hammer and dolly. Incredible skill and it took less than 12 months to build.
https://www.flickr.com/photos/63154743@ ... 5912533545
The last picture is one of George Beale's run of 8 replicas, up for sale at £450,000 (about $620,000)
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