I finally have the time to install the TerraTrip that I bought a while back. It came with two "standard-probes" which are designed to point at the back of the wheel studs on a non-driven wheel.  I'm installing this on a AWD Subaru which makes it impossible to aim the probes at the back of the wheel studs.

Question: I am wondering if anyone has had luck using the serrated "tone ring" for the abs instead of the wheels studs. I can easily mount the probe here but am not sure if it will be able to get a usable signal since the terratrip would recieve 30+ "blips" per rotation of the wheel than the usual 5 if wheel studs was used. There is also the possibility of using the stock abs sensor instead of the probe although the same signal/"blip" issue remains. Will the terratrip be able to use the faster signal accurately?

My last option is to go and get the "japanese" style probe which runs off the speedo cable, how much do these usually go for?

Thanks in advance for any advice/help