Steps to route cable.
1. Pull Crank:
You will most likely need to bang the crank off. You do not need a crank puller. I used a piece of wood and a hammer. Came off with a couple of soft taps close to the spindle.
2. Remove BB:
With the Lust 2 try to remove the drive side only. The bb tube is permanently attached to the drive side bearing. If you can remove that one first there is no need to remove the non drive side bearing.
I use a socket just small enough to fit through the bearing and lightly bang the bearing out. I tap against it move from side to side in order to push out the bearing as straight as possible.
NOTE!!
These bearings are not meant to be reused by design even if you have a bearing removal tool.
3: Run cable housing:
From the right side grommet pull the cable housing out towards you. (I ran mine "behind" the shifter cable, as in i pulled the shifter cable towards the rear of the bike, so the dropper post housing was behind the shifter cable, but more "forward" or closer to the head tube.)
It should feed directly into the BB. If it gets hung up just keep trying until you get it down there. There shouldn't be a problem. When I did the LUST it went straight through, when I did my anthem the housing was curled in a way it was catching on the inside of the tube. Took 4 tries and got it.
Once inside the BB shell its easy to route it up the seat tube.
4: Install seat post.
Watch this video for converting the Giant post from external to internal.
Do all of you adjusting before you put everything back together. Make sure you are happy with everything.
5. BB reinstallation:
Like I said, the BB is not intended to be reused and my anthem "creaks" ever so slightly on very steep grinding climbs (more on that later). I did pull it again and used the green loc-tite. I have not riden it yet though and I did order a replacement and have it ready to go.
By design these BB and Shells are very "loose" fitting. I installed the bearing back into my anthem with the palm of my hand!!!! I couldn't believe this and thought perhaps the BB shell was out of spec until I read this.
PRESS-IN MTB BOTTOM BRACKET FROM REAL WORLD CYCLING
"Because manufacturing tolerances vary, on many frames no special tools will be necessary to install the cups as they will press in by hand. On frames with a tighter fit, a mechanical means of pressing in the cups may be required"
The Lust/GXP was definitely a much tighter fit that the Anthem/BB92. I used a threaded rod/nut/2" washer homemade bearing press. You could probably use a vice or big C-clamp with a couple 3x3 pieces of steel plate or plywood. to give an even press over the bearing.
Good luck.
And tap lightly getting the bearings out.