I used to think this was a good idea also. I even had one car with cop car bumper mounts on the front. After having been involved in a chain reaction highway accident, I think the 5MPH bumpers are really a good thing to have. If you look at the way these cars crunch, they spread the energy out over time. I never thought my Cadillac was that smart when it came to crunch time. Those shocks usually have telltale signs of being compressed. If you find a set from a junkyard just look for any watermarks.