Suspension setup for M3 rear end?

[Nisse Järnet]

I'm swapping to a complete M3 rear end in a few weeks, but I'm a bit unsure about the suspension setup.
I know that the shocks mounts different on the lower arms, but how about the upper mounts and also the springs?
I'm new to this chassis so please bear with me 😅

[Bullitt]

I think it's the same - stock M3 and 135i rear shocks use 10mm upper mount. However, certain aftermarket M3 rear shocks use a 12mm mount.

[cwlo]

Are you grafting this onto your e30?

[Nisse Järnet]

Thanks, i guess I'll find out soon 😅
No it's for my E82