Congrats Jeff
Those look like they were on a later Z the early ones had the 3 bolt flange (right side) which i would suggest going that route easier to R&R the exhaust.
When is the install party?
I have a few beers in the garage cooler somebody has to come over and drink them before they expire.
Jeff,let me know if you need a hand with the install.
Can you say 120MPH
Pete