The paintwork on this bike looks pretty original. If so, it's not a 7/11 bike. It could be another brand of bike, re-badged as a Huffy for a lesser tier race team. As you know the 7/11 Huffys were Serotta-built with Huffy stickers on them. Is there a serial number on the bottom bracket? If so, e-mail it to Serotta (info@serotta.com) and they may be able to identify it for you.

Another person that may be able to help you is Dave Kirk at Kirk Frameworks (http://www.kirkframeworks.com) He worked at Serotta during those days and actually built many of the 7/11 frames.

Hope this helps.