Im in the process of doing the same thing, thats funny. What you have to do is remove the sxr "flip up" pole stop assmbly, its now useless. Remove the 2 pole stops that help the pole from over extending also. the rubber cable boot can still be used fine.
remove the rubber pad on front of the bracket. If you use the cover on the bottom of the sj pole, you have to grind down the rbs on the bracket for clearance. If you do not use the cover, like me, you do not need to grind the ribs.
for the steering cable issue, I cut open the left side of the pole mount area, and welded in a piece of aluminum angle to make both sides look symmetrical.
I did NOT weld a piece of aluminum over the face of the mount, so the steering cable can still come through. hopefully i can mount my cable mount to the aluminum piece i welded on, or ill just extand it further. Im just waiting on my sj steering kit and blowsion umi cable mount extender and im ready to go. Ive heard you have to grind down the black flip top on the cable mount so it fits under the pole.
heres a picture of the piece i welded. the steering cable mount will be a few inches down the pole, so itll be a pain in the butt to get in and set up correctly, but it will work. One of my friends uses a U bolt and grinds the center out so its thin and that locks in the cable at its mounting point.
you will also have to remove some foam to route the cable correctly. Use a big long screwdriver and start busting it out.
also, I was told you have to move the pole spring al the way to the left, because the tension from the aluminum on the bottom of the pole can snap the spring, my buddy snapped a few this way. secure it in place with a hose clamp is what he told me to do, i might try a different way if i can think of one
hope this helps
edit, it should look sweet like this other sxr...pics