I just got my 9012 Morimoto kit last week and it shipped with 9006 bulbs. Everything worked but there is some trimming needed on one of the tabs. They go in fine without trimming but you will get a shadow from the return wire. The bulbs had to be rotated 1 tab clockwise so the wire is at the bottom of the projector. If you looking at the back of the projector the tab that hits the slot at 2 o'clock needs to be trimmed down. I just used a toe nail clipper and cutoff the excess slowly until it fit in.
I believe that you may want the wire harness and the canbus. I may be wrong, but I don't believe the canbus connects to the battery so the 55w kit may put a strain on the factory wiring while firing the hids. I thought that the stand alone canbus was basically just a capacitor to balance out the flicker with the lower load of DRLs.
I don't know about the different look to the XB35 bulbs, I just got the standard kit because I thought I was getting 9012 bulbs. I got the 55w 5000k kit. They are super bright and the color is perfect, it's a very crisp white without the blue tint of xenon halogen bulbs.