Finally finished installing all of the above. Some quick comments;1/. The exhaust is epic. Makes the M5 sound great. Very loud at start up, but on the open road it's fine when cruising.
2/. LED interior lights - very easy install and totally changes the car. A must I think for just over $100 a very cheap upgrade. The M5 has 19 interior lights to replace when doing this, however it comes as a kit so very easy.
3/. The black grill and side gills make the car look a lot better.
4/. The H&R springs give the car a great stance with the spacers. Very pleased I did this!
All in all very happy with everything. Now I just need to decide if I want to paint the wheels satin black or will this be overkill....... So many first world decisions!