Thanks - at least that confirms I wasn't completely on the wrong track!

There is a rubber 'collar' and a silicone collar with the kit - is one of these (or both) used to stop the pipe going into the fender well touching the metal of the hole where the stock resonator box was connected to the air filter box?

Is this lower pipe (shaped like an 'L') meant to point straight down with the short part of the 'L' angled towards the filter?