I ended up getting Magnaflow #14816. I think BMWTuRk7x has the same ones. Really happy with them. Now that they're on, I with they were staggered too. Either way, I'm really happy with the sound and look.
Full Hamann Body Kit | Radenergie R10s | H&R spacers | Eibach Pro-Kit Springs | Bilstein Shocks | Angel iBrights V3.0 | 3M Clear Bra | Magnaflow Exhaust | M6 Side Mirrors