yes, fits r33.
Only branding I can see on it is mitsubishi symbols. But I do know that GCG rebuilt it to Trust original specs.
Oil & water lines are a no.
Intake pipe is included, dump pipe can be included also but it is only a few inches of pipe, not a full dump pipe.
In terms of boost, It has been a while but it did come on fairly quickly, lag wasn't noticable.
Rear housing, I'm unsure, if you can tell me how to find this, I'll let you know.
Also for pricing comparison, paid $4k for the kit, $1.5k for rebuild. Only asking $2.1k...
Cheers