If by flagship you mean top of the line, that would be the Bostonian Pro 100B, They had 15" woofers, two midranges with switches, and 3 tweeters. one midrange and two tweeters were mounted o the top of the cabinet. Trust me when I say they could play the 1812 Overture (with cannons) and make your ears bleed! LOL! Perhaps our next level speakers would be the 199T and 188T Series. our 166 series shelf speakers were a nice small package, too.
IMHO, that would be a worthy project!
Let me just say, we're going back over 30 years, and I'm now nearing 70 years old, so my memory isn't what it used to be. However, I am still PROUD of the pieces we produced back then. I personally had several Scott systems (granted I was an 'insider'). one in our bedroom and another in the living room. The main system had the Pro100B's. I would still be using them, but we had some mischievous cats who decided the woofers were scratching posts and totally destroyed both units!!! Somehow, one cat got inside the cabinet and wreaked havoc with the crossover! Since the company was gone by then, and I had lost all my contacts with suppliers, they were toast. I have a consignment dealer on the lookout for any Scott speakers he may come across. The 'force' of brand-loyalty is still strong with this one.
I hope I've been of some help to you.