I know this thread is old but it just got bumped so i figured I would add this.
To anyone that does this mod DO NOT REMOVE THE STOCK WIRING!!! Electricity takes the path of least resistance. AT some point the power going through the 1/0 run will back up enough to let the stock run take some of th power too. It helds distribute the load of the electrical pathways and is better than just doing the 1/0 upgrade.
thank is all, happy modding