I have basically got all the info below form loadsa threads!
Is it all there! for a Zafira GSi by the way
55557126 - Astra H CDTi Airbox assy with airfilter element (can't find my receipt but it was around £45 from vauxhall on trade club)
vectra C intake pipe 9177099 £6.35 & VAT
Flexi pipe for Intake pipe 9177104 £4.32 & VAT
also you will need a 90 degree silicone hose 70mm to 70mm
and a 90 degree 70mm reducing down to a 63mm silicone hose you can get them from samco, think mine came to around £48 but try other makes they could be cheaper. & a 70mm hose joiner, I used a bit of alloy pipe I had spare works a treat. or & don't forget
X4 jubilee clips
pipe work for the breather is 16mm
I used the red 5 amp cable from halfords, was a 7m reel and 0.65mm.
Rating of Max watts at 12v (69W),
Product code: HEF 711
fast reply would be appreciated
Oh yeah, plus the xtra of having to get the misses a pedicure to keep her happy