Fan motor studs?

I don't have a pic ready, but yes.
You can see the three holes in the motor back cover and where they go through the firewall also.

Ok I found a partial and blew it up so you could see the nuts on the studs that come out from the inside of the firewall and hold the heater plenum and motor both to the firewall.
There is also supposed to be a J hook inside the passenger side floor vent box.
(Inside the little metal door and it hooks up inside the vent lip where the air comes in from the cowl) to help hold the box up to the vent/box seal.

studs.jpg