Well my retrofit is 100% completed now, I made some trim rings to go around the projector to make it look more OEM, I used to just have a piece of sheet metal around the projector, I just placed these rings over it. I got these at WalMart....I dont think they usually carry them, they were in the Thanksgiving display. $2.40 for a set of 4.
these are the bowls I bought....I used the flat one and cut out a hole so it would fit on my older E39 projectors, if I had Audi or newer BMW projectors, I would be able to use the bigger bowl. I picked these bowls because of the gunmetal/smoked look:
the end result:
