You can put a 18hp barrel, head and piston set on it with the fitting manifold. Than you can it use it in normal traffic even motorway.It will do 90 to 100 km/H. If you don't have a nose wind.. But i drive the 12 hp in daily traffic it works only uphill it's a bit slow sometimes.
![Wink ;-)](./images/smilies/icon_e_wink.gif)
But it's a lot of fun to drive it.