Hi. Just purchased BMW PS and love it. Had intended to install these 4 M3 rear subframe bushings (2X 33312283382 & 2X 33312283383) and upgraded, stiffer 13 mm rear sway bar for M sport suspension (Tischer folks said it has thicker sidewalls inside making it stiffer than the regular 13 mm bar). It's part number is 33556764425 and the 2 rubber mounts are included on it.
After driving with the BMW PS I honestly have the car right where I want it. So I'm not modding the rear at this time and am thus selling these parts (they are all brand new).
Bushings: $220 shipped to lower 48 states
Rear Sway Bar/mounts: $140 shipped to lower 48 states
Please inform me if you have questions.
Thanks for looking.