The rear brakes use e46 M3 rotors…while the e36 m3 rear parking brake shoes WILL work if you wind them really far out they are not ideal. So Eric at Rallyroad.net suggests using e46 m3 shoes. They do have to me modified slightly.
Here they are before…as you can the lower spring will hit the shoe.
And then a little trimming
The adjuster had to be opened up just a little bit to fit the e46 shoe…
Left is before…right is after
All mounted up….brake bracket is on as well.
Rotor on…lug bolts on just to hold the rotor on with no wheel. Studs are on the way.