Draco,
I bought one of those Cast Aluminium
oil pans and was scared to death about hitting something at night (I figured I could dodge it in the day time). Go with the steel
oil pan. Armando makes a steel one that can give you a little extra clearence too. The way these things sit so low you need every inch you can get. If you get a crack or a hole in an alum pan your
oil will be gone before you know it. The cost will be about the same and you can worry about something else besides all your oil dumping out before you can get the key turned off.