I installed Nogaro's in my car a few months back:
https://f87.bimmerpost.com/forums/sh....php?t=1675296
I'm 5'11" with a 32" waist and it fits great, especially with the Quickfit Pros. The only downside is that the rear seats are basically unusable by adults, as you sort of have to snake into them.
The mounts re-use the stock seatbelt adapters, so you won't have to code those out. Bimmercode won't code out the airbag and seat occupancy sensor errors, you'll need to use esys or have someone do it remotely (they'll use esys).
If I did it again, I'd love to get Recaro Pole Positions custom upholstered, and somehow get BK type brackets that re-use the existing seat mounts (like the M4 GTS mounts). I briefly went down the path of building my own mounting brackets as well: they'd be around $300 for all four (what BK would make them for) since you'd have to have them manufactured by someone with a CNC break (you can't bend the right angles by hand). You can buy the mounts (PN 52108075097, 52108075098, 52108075103, 52108075104) but they're about $750 each!