ok so i went to magnaflow site and searched by vehicle model to see what cats pulled up and that one you listed didnt pull up andy...whats the difference in all these high flow cats? there is like fifty part numbers listed...whats the diff in the 94306 and the 94006 and the 94106...not looking for the polished versions since nobody is ever going to see them..just want a pair of high flow maggie cats...have found pretty good deals on the 94106 but doesnt say if it will work for my truck or not