Anyone tried this exhaust system? https://www.ebay.com/itm/113351632328?epid=17016097578&hash=item1a6448a5c8:g:d2gAAOSwDCtdQF3F
That to me looks like a slip on only, not a "system". Its "E Marked" which means it passes EU mandates, its going to be fairly quiet. At $400 with shipping thats pretty pricey for a slip on, but it is stainless and made in Italy.