I got a 84 318i and it's my first car. So i was driving one day and my studs broke, on my rear pasager side!!! so i tired mostly everything i could think of to try and fix it but i guess i made it wrose, so now i just took the trailing arm off and was gonna replace it with another one. Now i'm just thinking i should switch it with a trailing arm with disk breaks but i not sure if all e30 trailing arm are just bolt on or if there would be minor mods i was have to do? I just was to make sure so i don't just buy one and find out it won't fit.