Whichever has fuel
Standard cat and standard exhaust!I think this proves that OEM+ is the answer.
I'm aware this appears to be standard, aside from perhaps a set of springs and probably an exhaust as most of them fell off before delivery mileage was complete... But we can't see that anyway.
Looks superb. Which is a surprise as Daniel's photography skills are usually Jacket Potato.
Definitely better than some crusty old Sierra anywho