I tried a search here nothing showed up,then did a google search and that led to a fabo post with the info,one guy used the projector method,another made a template of the front wheel opening and used that for a reference.The process of restoring or building a car 30 yrs ago would have been much different from today,one of the larger swap meets in Indy[Marion County Fairground] has diminished to a 1 day show and they attribute that to people needing parts order off the web vs attending swap meets,I do believe that the web has also escalated part prices greatly,without the internet a BB A body LH exhaust manifold might be $ 75.Who knows