[Eliot Ness]

This is a very interesting restoration project, thanks for sharing.  I've never heard of Bozak before but a little searching turned up this fascinating quote from an owner: 

"I sell high end audio gear including very famous speakers that cost tens of thousands of dollars. I was not prepared for the level of performance that a pair of 42 year old speakers that look more like china cabinets than speakers are now delivering in my living room."

I don't think they are the same model you have, but it is a pretty cool testimonial to the quality of the Bozak brand.  I look forward to a listening test when you are finished.