Zach 134. Moonshadow is right. Click the link below to see a representation of what the original Ford '56 power pack valley pan looked like.
http://www.ebay.com/itm/1955-1... This is kind-of-like what Ford produced, but you get the idea. If you prefer this earlier style, Natoli makes these, too. The difference is his are more accurate, Ford look-exactly-like reproductions. The difference is in the details of general appearance, materials used (metal thickness, filler tube wall thickness), lower baffle production (original style pressed pattern) and joining methods used (spot welding, silver soldering) than the one pictured here on eBay. Yes, original power pack filler tubes were bronze welded (brazed) in place, but the silver soldering is stronger and neater.
As Moonshadow says, you could make one, too.
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York