Are the ART test pipes for the HR (2007/2008) the same as those for the VHRs..370Z and G37? They *should be*...but I'm reading some conflicting views.
Also..what is the difference between a Version 1 and a version 2?

These guys show they're one and the same:

http://www.nissanraceshop.com/produc...ineering-pipes

 

Don't quote me but I think they are the same....is there any part # to cross reference on the site?
Also, I believe the version ones were a smaller resonator coming out the side. I have seen the guys on here say that they have redeveloped the vers. 2 for a slightly different tone and maybe they got a few more ponies out of it.....same idea though. I don't know if you have any experience with motordyne stuff but I would highly recommend them. Great quality products. Looks like they just dropped the price on the ART pipes recently too.

 

The HR and VHR ART pipes are IDENTICAL.