Oh no no no, the shifter tower only has to do with the linkage problem...which is what this person who posted this thread has....its nothing majory like a rebuild. It only fixes the problem the thin cables, the weak ball links anf connectors. And the Shifter tower is stronger and reenforced.
Thats all it has to do with.....it has nothing to do (that i know of) with actually transmission integrity. Its just something to put in that you know won;t break (or worn;t break any where as easy) when your shifting hard and fast.
The reason you have to switch out the who shift tower assemble and not the cables, is beacuse the new cables are thicker and won;t fit in the non-focus shifter tower.
roz