Hello. I am just wondering about doing the 5-lug conversion. I have a E30 318is, it has the same rear trailing arms as the 325i. So I need just the 5 bolt flange. Is that part in the picture below with the number 1 ? The bearings remain the same? Thank you. http://www.realoem.com/bmw/diagrams/o/w/3....

What about an oil cooler? I'm about to do the same thing, have both engines out of the cars and I'm going to leave the 4.1 diff.