Wheelspeed 2 Input

What with the amazing firmware update 1.2.38 I need to consider wheelspeed 2 for traction control, I think it would be rude not to use it!

Looking at InputTrigger/WheelSpeed it says to use the SCL pin on the processor.

The real question is this

Advice welcome. I'm going to need the traction control with 250hp in a small lightweight car!!