Originally Posted by RimasRS
So your 335i shaft goes from gearbox till the joint and then welded with M3 shaft just at the Diff is that correct?
Other way round, I bought an m3 shaft and had the gearbox joint from the 335i welded on at the correct length. Although I'm sure it works the other way too.
I did manage to get do it 4mm too long first time around which meant the guibo was under too much pressure but the shop rectified it the same day.