Yes, that's the one <img src="/forum/images/graemlins/smile.gif" alt="" /> T25 inlet so it goes straight onto your exhaust manifold.
Remember the numbers refer to the physical size of the exhaust housing , a larger housing, like a larger pipe will flow more air, but also take more time to fill up with air.
So a larger housing, ultimately will flow more air, but also take more time to reach those speeds (i.e spool up time)
by the way I've got a (0.64) housing on mine.
Joe <img src="/forum/images/graemlins/smile.gif" alt="" />