I used one stock mount and one 4xinnovation mount; mounted to a TG crossmember. I did this because I've read about people breaking the mounts when they are two stock mounts. I've also read that with two solid aftermarket mounts the cases can be loud, and both my cases are regarded as the loud cases, pre 84. I have not done too much wheeling yet, but it's not terribly loud, and my engine mounts are stock. From what I've read, chain them. The solid mounts are supposed to be sorta loud/vibrate at high rpms/speeds
I put the 4x mount on the rear case