I have been out of town since last Thursday so I'm catching up on here. Went to the Charlotte Autofair. Been attending for the past 26 years.
I think my 69 Z/28 in two numbers behind yours!
711 INT 79 B PNT
06A Build X33D80
Cowl Tag Attached
VIN # 124379N659959
Our body numbers are two numbers apart but our VIN #'s are 5,925 #'s apart. Interesting.
Pic is likely over 400 kb, the system won't accept it. Bob is 100% correct - you couldn't have posted a better picture to verify the crank. The Z shaft is the only one produced with that kind of identifying notch. Nice flywheel, though - I wish mine was that pristine.
Picture is 42.1kb, I have resized it several times. Going to try and post it again with this reply.
Looks like the can be attached now. Same pic that I tried to post last week, same size too.
As for the tach, not saying it was original to the car, just that it was in the car when I bought it.