Actually, that's and excellent question. The answer is two part, receiver and transceiver. If you choose to go the receiver or "In" route, the iLevil2 SW is the way to go. I do think you'll see an AHRS version of the Pathfinder, but it may only be singe band receive.
Now, when it comes to AHRS in an ADSB Transceiver, there really is only one option... the SkyGuardTWX Vision Pro Plus. It's the only AHRS embedded ADSB In/Out on the market for the time being. But that maybe changing in the near future, I've pushed for this with a couple of the other ADSB manufacturers so I think it will eventually take hold.
AHRS is taking off and I think you'll see other ADSB makers adding it, but at this time in the market, I really like the iLevil2 SW and the SkyGuardTWX VP+. Just an FYI, the VP+ uses the iLevil AHRS module, which in my opinion is the most dependable and accurate .