Has anyone put a TKO500 in to a 65 or 66 mustang? I have been told by the guys at Dark Horse that it will not fit without modifiying the tranny tunnel. I spoke with Keisler Auto and they said they make a kit that will fit with only minor mod. to the cross member at the top of the tunnel. But after quetioning them a little deeper, they have never put one in a 65-66, only 67-70. Dark Horse told me that the tunnel in a 65-66 is slightly smaller. If anybody has done this swap let me know what you went through