A core BB #'s car will cost at least 20-25k depending upon condition. Low mileage original cars with lots of paperwork are "like the VISA commercial, priceless". If you buy an original car that needs a resto you will spend 30-40k to get it done correctly. Now everyone has there own measuring gauge of what is correct and who does the best work, etc. etc. All that doesn't change the bottom line: a #'s correct frame off restored L78 Nova will cost real money, CDN or US.
wilma