Aftermarket exhaust?

@sleeves
What are the diameter of those header pipes?
They look skinny to me - perhaps an optical delusion caused by the silver engine.
 
@sleeves
What are the diameter of those header pipes?
They look skinny to me - perhaps an optical delusion caused by the silver engine.

Gday, I think the pipes are 1.5/8" up to 2" collection header. There has been talk of upping the diameter to 1.3/4" but not underway yet. There's possibly going to be another complete system coming with longer header pipes too, while staying tucked in cleanly. Will confirm this and let you know.
 

Yep 1.5/8"
 

Thanks for the dope.
Shall wait to hear more . . .