Here is another thread that might help you, this is a nice step by step instructional to locate and outline the metal that needs to be removed.
Keep in mind 'PurelyGTO68' used a new hood that may not have had the hood insulation retainer holes that 'gto4evr' mentions in this thread to line up the pan.
http://forums.maxperformanceinc.com/...d.php?t=809815
Frank
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Poncho Huggen, Gear Snatchen, Posi Piro.