Hi all,
I wanted to put this issue on a seperate thread as it takes attention. If you order your wheel carriers used, you should also get a set of used/busted front axles.
The issue is that the pickup for the ABS on the C2 carrier is larger than that of a Turbo. Therefore you will need an axle, bust it at the CV nearest the carrier, and install it so that the pickups are there for the ABS.
No one told me this so I’m stuck sourcing one mid-project… really hate that. Anyways, I’ll attach a picture from a C2 carrier so you get an idea of what I’m talking about and what you’ll need to fabricate. I also don’t know if you need the Turbo ABS sensor, will be looking into part numbers to confirm and counting the teeth on the Turbo pickup once I source one.
Cheers
Aaron
Emerald Apple - Porsche Blog 
I have confirmed that the ABS speed sensor is the same part number across all models and therefore not needed from the Turbo as you can just use the one from the C2.
It also looks like the flange nut (part 6 above) is the same front and rear on all models.
Therefore, the only part you need here is that rear ABS pickup from a Turbo axle.