mrbmwx5 has put 4.8is mufflers(left and right), each of the muffler is list priced at $819.40(see link below). If you are buying these from dealer, it will cost you over $1600 +labor. You still will not have as good sound as you will with Eisenmann or Remus mufflers for less price. Unless you can get some used mufflers, its not worth it.

RealOEM.com * BMW E53 X5 4.8is Exhaust system, rear

If anyone is curious about N62 4.4i installation from resonator back with full 4.8is mufflers, here is my pictorial.

http://www.xoutpost.com/bmw-sav-foru...ts-4-4i-2.html

Of course, this is much easier if you cut off right before the muffler cans and weld there. This wasn't cheap as LemansX5 suggests.

is there anyway i can change the muffler on my 3.0 without it costing a lot of money? and would just putting the 4.8 tips on change anything besides appearance?

fwiw, if you can find the 4.8is mufflers in a junk yard, it is the best money I have spent on my manual 3.0, smoothed the entire band and a nice quiet rumble, no blat whatsoever from a redline-drop-to-idle. 3.0 certainly -seems- to breathe better, and I was expecting no difference at all. The wife noticed it as well, asking if I had found better gasoline, lol. NOT hp, just smoother.

The exhaust that shoulda' coulda' been standard across the X5 line, IMHO - yes I appreciate my luck finding them here. To my knowledge and personal experience, no to sound, the beautiful tips are just that, eye candy, but I have not heard it without the tips. I have heard a 3.0 -with- pretty tips, no difference in sound, but its cat-back is hobbled in my opinion.