need to mount apple studio 17 display and extend its adc connector please help

I understand that any products that used to accomplish this are discontiued or the manufacturer is out of business.

Id like to mount an Apple studio display and was wondering if anyone has fabricated such a mount and what specs might help my tech make one,

Id also like to extend the ADC connector and was wondering if anyone has taken one apart and then spliced all the wires back together. Make one long cable from two existing cables.

Please help

Thanks

Jim Calabrese