The four silencers do make the bike look very handsome. Strange to think the 4-1 system used on the 400/4 was also one of it's main selling points.
A question I have always wanted to ask though is if the 400 engine was basically an overboard 350/4 why did they change the clutch housing, was there a problem with the 350 clutch that was subsequently redesigned for the 400/4 engine?