I got the same bucket as Spamy, it is indeed metal. Pretty thin, but metal none the less.
As far as the lamp goes, Dave's right, it's hard to find a good one aftermarket for conversion purposes. I'm trying something a little different. Since a fuel injection conversion is in my future I need to free up some watts for the fuel pump and ECU. I'm a dealer for Truck-Lite so I went searching their catalog and came up with this.
http://www.truck-lite.com/webapp/wcs/stores/servlet/GenericView?pageName=/new...Pricey, but good lord you should see it lit up!
............I really need to start a build thread one of these days......Hmm...