Foundation Designer stands replica

I own a pair of Graham LS5/9 that I use with the mythical and rare Foundation Designer stands for Rogers 5/9.

My plan is to upgrade to another bigger Graham speaker so, the original Graham stands are not the best in my opinion, I would like to build a new pair of clones of Foundation Desginer, but bigger.

Do somebody know the details of the originals? Materials used, and so on, in particular?

thanks