This is an IPhone spec picture of stock(version vi) v name brand v ebay spec.
The name brand appeared to be better quality, with a spring embedded in it as well,where the cheapo did not.I purchased the name brand one when i thought the cheapo did not fit , but then found they fitted equally well.I tried to fit mine by without removing the manifold but could not get it onto the turbo .i also needed to modify the bov return pipe as it was too long for the new part,you cannot see length comparasin as the stock was section was removed with a chisel to allow the intake to be slid out without the manifold removal.
And as said before this job will do your head in if you dont know what you are doing