Hi guys. I ordered a set of mounts from summit for my 73, but they do not fit. These have a 2 5/8 opening, but the clam shell mounts on my car are almost 4". I don't think I am the only guy whose ever put a 350 in a camaro, so I am hoping you guys can help me out. I was really hoping to get this motor dropped in before I go back to work on thursday. The local shops have no idea what I am talking about, so I am turning to the experts I ordered set 3.1120r from energy suspension.