2007 Ford Mustang Axle Information & Ratios
| Axle code on B pillar | Ratio & type |
| BG | 3.31 Conventional differential Std. on V6 Mustangs |
| CD | 3.55 Locking differential Std. w/ manual transmission |
| CG | 3.31 Locking differential manditory on GT Automatics |
| CB | 3.73 Locking optional with manual transmissions |
This list is incorrect. The CD was an optional axle, and was not “standard” on the 2007 manual transmission GT mustangs. The 3.31 code “CG”, was the standard differential setup for manual transmission GT, 4.6l mustangs in 2007.