Need a reference
 

I'm restoring a S1 67 E-Type and need a resource to tell me what the bolts look like that hold the frames to the firewall, the picture frame to the frames and the bonnet support to the picture frame. Which are painted, which are black oxide and which are cad plated? Does anyone know of a book that spells this out? (I have half a dozen books on originality and none of them address this.) If not, how about an owner of an original 67 that I can speak with?

Thanks, Herb