With a Catback exhaust by Simons, you get really high quality and nice finish. It is a really good stainless material and easy to assemble. Everything you need for mounting is often included eg clamps, gaskets, and clamps. Exhaust from Simons is a fit and does not need to be adjusted much for them to fit really well.
If you want a complete exhaust system that lasts for many years, we can warmly recommend Simons. It is compared to other and even more expensive brands with much better stainless quality. These exhausts do not rust and surface rust did not easily settle on the pipes. The quality is 304 stainless. However, still cheap exhaust.