[wagonman76]

I did mine out of aluminum siding because it was free. True, if you kink it to a sharp bend, itll break sooner than steel. But I had no problems with it breaking as I was forming it. I even folded the ends back and relocated the bends a couple times on the drivers side. Also if you bottom it out, itll most likely fold over gradually and you can pull it back. You wont actually land the entire front end of the car flat on the road. Also a plus is that it is more malleable than steel, so at the absolute worst if I lose it somehow, itll deform rather than poke a hole through my steel gas tank or oil pan or other things. I dont see that ever happening though, it is on there better than the airdam on my 6000 wagon and that one is still there. Really it is quite rigid though with a longtudinal bend at top and bottom.