2011 XJ Supersport perfomance exhuast/cats

[brakedust]

Afternoon all,

I'm looking for a bit more growl from my XJ Supersport when loaded up, but something that won't ruin the car when cruising at motorway speed.

I don't really want to swap out the back system as I like the OEM look, so is there a performance catalytic converter option or a centre box bypass?

Thanks in advance!