pretty sure you just gotta mod the cold pipe a lil bit. My friend uses a SR fmic kit on his ka-t and the provided piping works fine.
FYI the T25 will not give you big power. It wont even hold full boost to red line on a KA. Try to find a T28 at the least cause you will be much happier. My friend ran a T25 for like a month and was severely disapointed so he upgraded to a gt28, that was not enough so he is rockin a gt30 now.
http://www.efispecialist.com/store/i...d&productId=12
Look into a tuned ecu. This is cheaper than a enthalpy and jim wolf and people have said good things about his tunes and customer support. I dont vouch for him but other people on ka-t.org and nico were pleased with his tunes.