UM.....interesting, well, I am using a TRD short shifter myself and I am agree with Dorikin, It comes with a new upper housing so no spacers is needed, and it marked "TRD" on the upper housing so the possibility of getting a fake one is very rare, I believe the one with ID Family is a geniue TRD one since I installed it for him.It came with a TRD upper housing and the "shift" itself.....so it's just a direct swap from the original and using the "C" ring from the original stick also.. cheers...