I don't know if this is in the right place to post. I am sorry if it is. I just joined today. I am restoring a 73 Duster for my son who is presently in Iraq and am hoping to have it drivable for him when he gets home. I am hoping someone can help me find an exaust diagram so I can order Magnaflow mufflers. I need to know where the inlet and outlets are on the muffler so I can get the correct ones. Thanks.