I fitted my vectra c air intake pipe and oil breather filter last night thought i'd show you all.


not to bad to fit but if fitting to a astra you need to extend the air temp sensor wire i'm not sure what they will fit like to a stardard air box though as the outlet pipe from the astra box is oval and the vectra pipe is round and also the pipe bends downwards i had to adjust my induction kit to fit the pipe prob not an imposible job but just a quick word of warning.
Cost
Pipe £16 trade
breather £4.99 inc p+p (ebay)