You're probably gonna have to go down the universal 'box of scaffolding' bracket path.
It's no bad thing. I have one hanging my TV on the wall, it's rock solid and was far cheaper than the Sony equivalent.
It ain't pretty, but who cares? Nobody gets to see it back there anyway.
Arcam A65+ & CD72T, B&W 602 S3, Grado SR125, QED S.A Biwire, Russ Andrews Classik Powerkords.
Sony KDL-V40A12U, Sony RDR-HXD910 DVDR, Onkyo TX-SR875, B&W MT-30 7.1, QED S.A XT & HDMI-P, Russ Andrews Yello power cables, Russ Andrews 8-way Silencerblock.