Installed my Soul delete today.
The kit is very good quality, better then i expected. My only complaint about the quality is the Clamps for the tips, they should be welded on. They look terrible, i am going to need to figure something out, as it drive me nuts
The sound isn't bad, wakes the car up for sure, however I'm used to the E60 M5 with E-race mufflers and nothing will ever beat that sound. So I'm still like MEH it sounds ok. In my head i just keep wanting that V10 sound which is never gonna happen.
But all in all, good kit for 1k, if you want some sound from your M6. I put it on myself in less then an hour.