Gearbox/diff question

[Beaniemoo]

Does anyone know if the final drive ratio of a phase 1 172 and a phase 2 cup are the same, i need to know if the diffs are interchangable or are the amount of teeth on the crownwheel and pinion different between the 2 boxes?

Cheers. Chris

 

[Whiteley]

Different final drives.

 

[Beaniemoo]

Cheers matey, super quick reply.