I've got my motor down and I'm ready to make the jump to Razor's kit. My question is, is there a better material to make the tank out of instead of using the plastic tanks. The reason I ask is that I have access to bronze and brass bulk material and I can weld/braze these materials. I was thinking of making my own tank and mounting it in the trunk along side the pump. Has anybody researched this or know off hand if brass or bronze would hold up ?