introduction / performance exhaust question (4.4i owner)

[Professor]

Hello all. I purchased an 05 4.4i black/black w/ 90k on the clock a few months ago. I absolutely love it. I was driving an 06 xc90 but lost it in a flood. This thing has all the bells and whistles I wanted. I have had 30+ cars over the last 13 years covering many manufacturers and I really enjoy the fit and finish of this bmw.

What I would like out of this is a nice rumble from the exhaust. Nothing crazy, but a nice rumble when I start it up and give it some gas. I saw some magnaflow videos and it sounds awesome. The details where not there though. Can anybody point me in the direction for what size xpipe or muffler I would need ? Or throw me your ideas! thanks

Matt

PS sorry the pics are so big ha. Ill make them smaller next time i post pics