I've been trying for a week to find an answer to my question and found this great forum. I have two Sirius subscriptions. I was hoping to have my local Toyota dealership install the sirius kit to my JBL w/ Navigation head unit that came with the car. Toyota no longer sells the Sirius kit, only XM. Can I transfer my second Sirius subscription to the XM kit or would I have to sign on to a new XM subscription? My subscriptions are annual with Sirius. I was told at Best Buy that you can purchase any XM hardware and use it with your Sirius subscription, but I don't trust that answer. Thanks for any help.