I wouldnt buy Carbing items they rust away. Have a look at my build thread if you dont believe me.
The J's brace will clear the Gruppe-M.
The rust isn't a problem on the Stainless Steel Carbing items But as said the front brace won't clear a Gruppe M
Yeah Lottie yours rusted bad didnt it, my carbing front upper is fine though, it must be because it has protection in the engine bay.