I bought this M-22 - P9T17C, two weeks ago. I actually came on here today to post it. It has the listed partial VIN #19N574817, and I bought it off FaceBook marketplace, in Peekskill NY. The gentleman I bought it from said his Grandfather had been a Racer back in the day. It’s from a January 69 built car, and the M-22 was built 12/17/68. It has the correct case # 3925660, tail shaft # 3857584, and side cover # 3950306, and appears to be unmolested. Too early to be a COPO. That leaves an early optioned Z-28, or L-78s ? It was in storage, amongst his Grandfathers hoard of parts. If the owner of this 69 Camaro is out there, I would like to get it back to the original car & it’s owner. Even though I bought it because I have a 69 myself. Just e-mail me if it matches your car. Jim