So the CR and CRT has the same diff holders just the post are different? I wasn't 100% positive, but at Amain, it said the center diff mount was for the buggies and nothing about the truggies but I see its listed under the CRT parts now. You'll need
these like nl12 said. The post for the CRT have the spacer on top instead of a new top plate as well. Sorry, I was wrong.