Demon 340 six pack factory?

I bought one 71 Demon 340 Six Pack that was built at GSD in 1972. A customer walked in and wanted one, but Norm told him they don't make them anymore, only Supercharged cars, but the man insisted so Norm took him out to the used car lot and showed him an FC7 Demon with white bench and white top. He said he wanted one with black buckets, console, and black vinyl top. Norm asked him how much he had to spend, and the deal was done! Norm had that used car built like the man wanted and had a bill of more than $3200 tacked onto the used car price of $2200...LOL but he got what he wanted...