Hey all,

I've recently had a new exhaust fitted, and the exhaust shop reckons a previous owner of my 07 HR 350z may have had hi-flow cats installed. To my eye they don't seem to be aftermarket (no logos visible and not chrome or "flashy" aftermarket look), however I've never taken a look under another HR 350z and hence don't have anything to compare it to. Can anyone identify whether these (see pics attached) are stock or aftermarket cats, or provide any other helpful info on the topic?

Cheers!

 

def not stock

 

Inclined to agree ^^. No heat shields. They could be removed but for what reason?

 

stock hr cats

 

maybe they gutted em and added after market weld in's