Hello Lads,
Thanks for the information.
I was able to get a reply from Manuel that did the photo build site at Ispra.Net - Alex Patak Audio

He reports that his build was from 25MM "phenolic Beech" plywood, and the insulation was 10MM unbleached wool felt. the best results were from directly on a heavily carpeted floor.

I guess I will go the purist route on this, just need to find the extra dough to commit to this project.

The only thing I can find no definitive answer to is the Altec 416A or 416B choice, While Hiagra wrote that "he did not care for the sound of the B, there was no other reflection as to why.
I have not found anyone so far with experience with both the woofers to expound on it.

But, for now, I have a near new pair of 416B woofers,, in the future I could indeed try the A, as it would not be too hard to swap woofers, at most just making a new front board.

Anyone out there with both versions of the 416 that can comment?

As for amps, I own a Pioneer Spec 2, and Spec 4, a pioneer Sa 9100 and a Sa 9800, plus a number of 70's receivers.
I will be looking for a tube amp soon, just not sure what to look at that is within a reasonable price.
Thank you all.
Donald Bowman