If you are not trying to go OEM original there are a number of companies that offer brackets in both steel and billet aluminum.

I got mine from Bill's Hot Rods and they worked great. You can call 626.332.1915 or these web sites sell them as well:

http://www.performancechrome.com/en-us/dept_491.html

http://daytonasp.com/ven/bills%20hot...ot%20rod.shtml

http://www.gemstreetrods.com/Brackets.htm

Pat