i remember the first time I did it on the 370z. That heat sheild on the driver side was a real pain in the *** for the first hour then I decided to work around it, which wasnt too bad..
just one big advise, if one of those stud get off ,, make sure you screw them back in properly and not slightly cross threaded .
I had 1 that I crossthreaded without knowing it ... it wasnt fun at all trying to realign it in the hole since the header didnt fit !