While I have not updated to the Xenon bulb myself, I believe they are the 'B' - something about the way the return wire (post) is aligned. You can always email TRS, they are good people.
You can actually read which ones you need at the bottom of the page when you are ordering them.
H11A VS. H11B? Make the right choice on which HID bulb you require with the help of this Picture and Video. Choosing the wrong product can result in the presence of a shadow in your light output. We’ve found the H11B tends to work with most newer Japanese vehicles, while the H11A (regardless of what stock size states) matches the fitment of most Hyundai/Kia models.
I just finished installing my hid kit I ordered the h11b morimoto from trs. when I look at the headlights there is a large shadow obscuring the top portion of the projector. Any suggestions?