Ok "Dieselheads".The 4.8 mufflers arrived today.Going on a short holiday and will start working on them as soon as possible(I am tired of the jokes directed at my X5,that BMW forgot to put exhausts on it,that its an Electric powered X5.....and so on!).
Just for the record,those tips are really nice and the "magnet" doesnt stick to it as someone said on this site!!The pipe diametre is 2.5" (6.35cms).Watch this space!!!!!!!
Actually,I am going to submit an article with full installation pictures so you can all see and be able to do it as well.