Just do an OEM CSS muffler. Simple bolt on and great sound ??
This. But don't toss your OEM muffler. You'll go DP one day (like we all do) and you'll hate it.
Do either a custom muffler delete (Louder and some drone) or the CSS as recommended above.
In case you ever do go DP (you probably will want to eventually) definitely take digs advice and keep the OEM muffler as I had to put mine back on after DP and Vibrant res. I had a muffler delete and it sounded poopoo.
I forgot to mention that I am going with a center exhaust... I have the valance and the tips waiting.
I had a mk7 Golf with the votex kit and center exhaust that was wrecked. Upgraded to the GTI and want that center exhaust back lol.