yes a short length of hose is needed to go from header tank down + 2 jubilee clips.
Its been a awhile but I think I used the OE drain nut which goes through the banjo.
I think I also used one of those open ended circlips with rubber trim to lock hose to box.
No worries ( you should ask John how many daft Q's I've bombarded him with ... he has the patience of a saint!)
Ha, cool. Thanks!
Regarding the banjo, I meant how is it attached to the hose in the photo?