Thanks, I'll look through the boxes and boxes of parts tomorrow to see if anything looks appropriate. LOL Like a jigsaw puzzle....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.
When I took mine apart, they weren't studs. They were three rubber isolators with studs on either end. The aftermarket motor I replaced it with was shorter and came with short bolts to replace the isolators.
Take the three tiny screws out around the perimeter of the circular "shell" and the motor/blower assembly will come out. Then you can see what you are missing.