Springs + exhaust

Evening, I wanted to buy some nice things for my EG3 tomorrow, especially springs + exhaust wanted to buy the things at D&W. with the springs I tend to 40/40 Waitec springs for about 130 euros, I wanted to leave the shock absorbers… with the exhaust I have almost no idea, would like to have a nice (with a double tailpipe) with a very nice sound, but none of these duplex things. which brands are recommended there ? price, hm, no idea, let’s say until 300 euro. but it’s like this. Is there something that I could take quite easily through the Tüv war what then ? so, that was for the first time beautiful evening still