This was the connection in reference. Nordfab actually will make a custom end for it, however I didn't want to wait. I picked up an 8" to 8" duct connector at the BORG. A little fine tuning, a few screws and some tape ... and viola! A few pics to show how it was done.
Thank you everyone for the information, feedback, and opinions.
Thank you everyone for the information, feedback, and opinions.