330i back box on 320i
hi guys new to this forum and bmw's might be a silly question but my friend is getting a new back box for his 330i e92 2007 and said i could have his old oem one was wondering if this would fit my 2007 320i would there be any power loss at all or should i just get the performance exhaust for the 320i sorry if i sound silly thank's in advance
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