I have found a manufacturer who is willing to take this on, but I have to provide the material. So I am now working on sourcing the steel. 24mm Hollow Bar is not common in the US so I will have to have this made special for your needs, that's going to affect the price.
I'll keep you posted.
Maxwell Church
Nemo Malus Felix
ATI Performance Engineering
47199 Cartier Drive
Wixom MI 48393
248*848*9200 ext 131
248*894*2219 direct