Can anyone tell me the part number for stock street car axles that will fit a 991 CUP, I used stock axles for my 997 CUP (think these were a 996 Turbo axle), thanks.

 

No way to fit streetcar axles on the 991 Cup as the Gearbox is a specific design and so are the axles (in size/ flanges). Go for the PMNA-Route or get Metalores directly. I‘ve never seen either of them break or fail. Even with standing starts!

 

On 991 Cup just us the factory axles.