It's really hard to tell here but I went in the garage and snapped a few quick pics before work for you. The first pic is the mix motor. These are taking from the passenger side looking behind the dash and over the trans tunnel.
You've probably already found that. Directly behind the mix motor and further up on the trans tunnel is the blending arm, I can't get you a pic of the actual motor without taking the dash out but I hope you can see it in here so you know where too look. This is almost to the firewall on top of the trans tunnel.
You can barely see it in that pic but it's there on the white box. You'll have to take a LOT of your dash out to get to it.
I hope this helps.
Shane