Arrived in December
Unwrapped:
SS headers installed, perfect fitment. Stock headers with giant cats!
As I mentioned above, the Supersprint headers for the Z4 do not come with flanges and I was prepared for a custom job. What I didn't realize was how far they headers would dump out. We ended up having to trim down the SS straight pipes to give further clearance for the rest of the system.
The curve exiting from the headers isn't ideal but it's just a function of the Supersprint design. The headers dump out so far it doesn't give much space to wrap the pipe around. However the current layout actually mimics very closely to factory design. We originally tried with 45* bend but there just wasn't enough space.