Ive been following this for a while, I ended up doing the f80 complete swap with the uprights and kept the f80 wheel bearings. I added in stainless lines, Porterfield r4s pads and motul 5.1 fluid.
I can say that the setup is an upgrade over the stock setup aesthetically and also from a performance standpoint. I do not track my e90, but it does make roughly 2X the power of a stock car and repeated stops/slow downs from 150+mph have not been an issue. Pedal modulation also not an issue, a little more predictable with this setup as opposed to stock.
Works for me, only thing I may do is to refinish the calipers to a diff color in the offseason.
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E90 M3 - 6speed - slicktop - single hump
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