They are real
I used them on my 'cuda - did have to do a lot of grinding to get them to fit real well and I redesigned how they routed the brake / fuel / parking brake lines.
XV also makes them for a-bodies; so you could check there...
I would be interested in finding a set as well... I am having trouble finding someone who has the templates... been on my ebay search for quite some time with no hits.
Does anyone have a set they could scan. I am ready for my winter porting project...