All front suspension components are unique to the M only. Found this out rebuilding my car. E36 have different top mounts to the M and the M ones don't fit on the e36 struts. It's a bit of a myth. New struts are around £300 from the dealers and the wishbones are £150 ish each (after market). The M wishbones are wider than stock. I have a couple of front springs, drop links and brand new M wishbone bushes knocking around if any good to you.