Bruno, I have a 92 525I (5 Speed) and want to change my differential to a 3.46 LS. I read your previous posting, and although the 535I differential is a 3.46 LS, it was noted that it will not bolt up to a 525I because of the flanges. Is it possible to replace other parts so that it will bolt up or is it too much trouble? I don't have the money to buy a new one from BMP or other companies $$$$. What is the most cost effective way achieve these gear ratios? Thanks in advance!