Originally Posted by BlackedOutREVO
Do I need the whole kit, or just outdrives?
Depends on your preference, the Pro Spec diff is a complete ready to use unit....however it comes with delrin outdrives.
While the delrin is lighter than the alu type they have more flex and will not be as efficient in modified as the alu type.
If you require an alu diff then you will need both the diff itself and the option outdrives.
The Pro Spec diff isn't compatable with any of the current Cyclone diff parts as far as im aware.