Okay I have been reading the threads about installing the mustang gas tank in the rear frame rails. It appears to me that everyone is installing the tank inside the frame rails. My question is why inside the frame rails? I was looking at installing mine under the frame rails with a metal support. Am I missing something or would this work? My thought is atleast I could remove the tank easier in the future, don't have to remove the frame rail support and no frame rail modifications. Thoughts.....