Yes, the KW camber plate will work with Moton dampers. However, you may have to file down the length of the sleeved bushing/nut depending on which Moton damper you are using.
As far as I know, Turner doesn't make a street camber/caster plate that fits on a e9x M3. At one point I had used the Turner street plate on my e46 M3 - ok for street use (works with stock-style spring) but I'd switch to their race camber/caster plate for track use (spherical bearing instead of bushing). I actually switched to the GC race camber/caster plate.
The GC e9x M3 camber plate uses a bushing that's similar to Turner's e46 M3 plate; however, you can get an upper spring mount that works with stock-style, 60 mm or 2.5" springs. I'm using their plate with 60 mm springs.
TC Kline and Vorshlag both make camber/caster plates for the e9x M3 but I believe their designs only work with 60 mm, 2" or 2.5" springs.