Y7 And Y8

Another one from your neighborhood question boy.
The Y7 and Y8 Heads are Similar no ?
so would the header, pipe and cat fit on a Y7 Engine ?
wouldn't all id have to do is make the Second O2 sensor cable longer ?
and if there the same, any good Y8 Aftermarket headers cause i need a full exhaust mines kinda hacked and welded to shit.
The Y7 and Y8 Heads are Similar no ?
so would the header, pipe and cat fit on a Y7 Engine ?
wouldn't all id have to do is make the Second O2 sensor cable longer ?
and if there the same, any good Y8 Aftermarket headers cause i need a full exhaust mines kinda hacked and welded to shit.