A little update on my title work for my 1967 175... I filled out Michigan Secretary Of State form TR-205 (see link)
https://www.michigan.gov/documents/tr-205_16198_7.pdf and followed the directions attached. it was a bit of a hassle as this was my first time trying the "last resort" method to obtain a title.
The clerk behind the counter was familiar with this form and was very helpful! I paid 6% sales tax on the NADA value of the bike in it's present condition... I walked out of the Secretary of State's office with a title application receipt and should receive a title in 10 business days.