I found on Amazon carbon fiber 15mm tubes that are threaded on each end. They are made for camera mounts/arms. https://www.amazon.com/Carbon-Universal-Camera-Support-AM-CR300/dp/B0CM8SLBSP they have 12 inch and 8 inch. So... front bar and back bar. What I think the hardest part would be to get the correct 5/8x11 to 5/16x 24 adapters. Then could add some of the weights i already have. Anyone try this before?