Bl4cK32, I intend sending it back to them. If they dont want to refund, then I will take it further for the reasons you stated. Still an expensive lesson, as I have to pay to get the new plenum fitted and get all the pipework re-plumbed.
B-man, no worries, I spoke to them directly and went by what they told me, then made my own decisions. I think that as long as you right a factual account of your dealings, make it factual and verifyable, not emotive or based on feelings and you can say what you want.
Lesson to be learnt - buy a tried and tested product, that way you wont get any suprises.
I am getting a trust plenum. They fit straight up, everything attaches, and there are 100s if not thousands of satisfied customers using them already.
I used to be a big believer that australian made products will perform as well as japanese, and where possible use them.
From now on, I only buy Japanese made performance parts.