Mexico Tax Asset Book

 We have many Mexico locations and have implemented USGAAP and Mexican statutory books for them in Oracle Assets.  We now want to implement a Mexican tax book to provide an integrated solution.  The tax book must include all calculations necessary to provide an updated depreciation amount by asset, including the INPC index for the month placed in service, the INPC index for June of each year if the asset is used all 12 months of the year, and the appropriate INPC indexes related to the first and last years of the asset's life.  Has anyone implemented such a book in