Great thread guys!
I have a pair of Cobra Evolution Pro-Fit that I will be moving over to the M3 , from my Z4MC.
It made my day when I saw this thread & the BK mounts on the OE power rails!
My one thought re the BK mounts was, how much lower can I get my racing buckets compared to the OE power seats.
The other with the harness bar.... I was surprised to see that they use stainless steel for the bar.