Originally Posted by marconi118
could you simply assemble half shaft from M3 with the rest of 335i?
Yes they bolt together. I used a shaft from a E92 as the E90 shaft that came with the diff was damaged. I also know that the manual 335 driveshaft is slightly longer than the auto so it will require more cutting.
Everyone must please understand that I am giving this information as my personal opinion and should not go out and buy the components based on what I say. You should research things for yourself prior to financially committing.