350Z HR Y-pipe installed on a 2003 G35
#451
#457
#462
#464
I can measure it tomorrow when I am back at work. 1.75" seems about right.
#465
HR y-pipe from the VQ35HR used in the 07-08 350Z does have the correct inlet diameters to match the DE cats and midpipe. Obviously something changed with the G37 coupe/sedan and possibly the 07-08 G35.