After encouragement and support from Jay, I opened up the T5, cleaned it out and swapped the input shaft. When I pulled off the tail housing a small ball bearing fell on the floor. I literally laughed out loud. I did manage to not kick it to parts unknown. The trans is back together and all the parts are accounted for. I'm very confident that there's an 80% chance that it's 65% correct. It should work.
Thanks to Jay for the coaching and talking me off the ledge so to speak.
