has anyone called an infiniti dealership for the OEM part numbers for the cats on the AWD vs. RWD? if they're the same part# I would think that these would fit too.

 

Not so quick, the ART pipe is wider than stock cats...

 

Any rasp issues with these pipes. I heard a g37 sedan and at high rpms I could hear the annoying rasp.

 

Did anyone end up trying these on AWD yet?

 

I had rasp for a long time using silicone RTV to seal the gaskets. Using the Z1 gaskets made it 80% better. I still have drone around 2.5-3K RPM though.. I'm thinking that could be because my y pipe goes from 3" into a 2.5" midpipe.