I added info and my report on your car the the CRG DB. Also have it in my personal DB.
I will be in your neck of the woods next week. Flying into Minn-St. Paul Wed morning, one car to certify in Blane, MN and then a flight out that evening for Rapid City, SD. Plan to see Mt. Rushmore while I'm there........I hope weather permitting.
In regards to the other question about 67 Zs, there is a 4L on the trim tag. The very early cars, first 17 or 18 have a 4P on the tag instead.