2004 BMW X5 4.4L- Will X5 4.6 or 4.8 Rear Bumper fit?

[justinhoisington]

I've got a 2004 BMW 4.4L X5. I was rear-ended last week and I'm going to have to replace the rear bumper. I can simply put another 4.4L bumper on, but I thought I'd consider putting on a 4.6L or 4.8L bumper.
Can anyone give me advice on what you guys think?
Will both the 4.6 and 4.8 bumpers fit?
Can I choose from only certain year models?
Is there one bumper that's more sporty than another?
Any favorites?
Will it look silly with just the rear bumper and no front bumper upgrades?
I'd like to take advantage of this opportunity, but I don't want to mess it up!
Thanks,
Justin

[Estroil 4.8is]

4.6 and 4.8 rear bumper will fit on any year X5. The rear bumper didn't change since production started. The only differance is the under spoiler which looks good any model 3.0/4.4/4.6/4.8. So in my opinion go for it!!