2004 525i

[Semperfi009]

What all mechanical parts are compatible, I need rear control arms and bushings, will other midel cars fit for Mt 04, or is it only 04 compatible, also I wanted to know that if I went to bigger screen and got the ccc headunit, is it plug n play or do I have to do wiring and what not.
My car was also pre-wired for bluetooth, how do I get bluetooth to wirk, can it work with mask or do I have to retrofit to ccc or cic, also how hard is it to find bamboo trim, I really like the style. That's all for now