Tail pipe looks smart, 4x4, although, I personally prefer the square'ish look on the 850 cut out.
Regarding the calipers...I did the same years ago after having them sandblasted and just brushed on some black Hamerite. They still look the same today.
Ohh...and something to relieve the boredom...the front pad retainer springs are stainless so clean up nicely with a bit of steel wool
