Well you could mod a real steel if you can find one, or mod a wooden rifle stock or make your own.
If your creative you could take your existing body and create a mold for it. Then using an aluminum frame inside the mold add autobody filler or some form of moldable pliable polymer, let her set sand and hollow out to your needs. Its alot of work if you ask me.
Perhaps someone else can add a little more.
"Its only a little bit on fire"