I've just sent the turbo seller a pm to tell them the news, they already knew the housing wasn't what they told me as soon as I noticed but they have now wasted me the money for the setting up time
I'll do a proper writeup tomorrow because the way the car drives and how smooth it runs is something else.
In a nutshell I'm over the moon with the way it runs and pissed off with the guy I bought the turbo from and would like some money back.