Hi James! hope you got my PM

I also had a problem with my turbo and ended up speaking to turbo technics who i believe had a hand in some way with the original sourcing/fabricating of the custom T25 turbos. I say this because they strangely had an untouched one on the shelf which i managed to get hold of to replace my failed blower!

The exhaust side of the turbo is somewhat hard if not impossible to locate the origins... As far as i'm aware the manifold flange pattern is not a standard fit for any turbo exhaust housing except the T190/T230 specific turbos. If that is the case and all else fails you could change the manifold... but being a T series car it kinda might feel slightly wrong to not have it as it was designed.. all be it some what annoying and impossible to do anything about... That being said, they're all custom builds anyway and it would be for the benefit of the car..