Can you link to the photos? I'm not sure which ones you mean but the Herald had three mouldings each side: front wing, door and rear wing, with the rear wing moulding finishing in front of the fuel filler, and the same length on both sides.
The Vitesse had one longer rear moulding, right to the end of the wing, on the driver's side (UK) listed as 806995 and a two-piece setup on the passenger side, a shorter one from the b-post to the filler neck and one behind the fuel filler, the shorter end piece being 613141. There's no room for a single long piece on the passenger side as it can't bypass the fuel filler, so it's confusing me that you have three long mouldings?