Squeezing an Hosqvarna 360cc engine into a Vespa monocoque sounds a very difficult job. But apparently ain’t impossibile

Marek mounted a Husqvarna 10 inch engine of 55hp coming from a 90s enduro motorcycle, in central position, tilting it 45 degrees forward to get the best weight distribution. He then adopted a Vespa PX kick starter to ignite it. The rear wheel is a modified Honda Comstar, the swing arm is coming from a Yamaha XS400 while the drum brake is from a Honda CB750.

http://blog.vintagestyle.eu/ten-inch-terror-meet-the-vespa-husqvarna/