Considering straight piping my 05 CTS with about 115k Miles. Has anyone who’s done it before remember which setup they used? Want to use an xpipe in the middle and leave the cats in place so it would be cat back. Does anyone know the length and size pipes I would need to make that all workout? Or if anyone has any other suggestions looking to mix it up with the exhaust not sure what will sound best. Heard of some people just chopping the mufflers but I’m not sure about that.