Here's what I did:
I strapped a piece of galvanised strapping around the box and tightened it with a bolt. Visually, there were quite many gaps, and they proved difficult to smooth out. But the strapping wouldn't budge, so I left it at that. I took a piece of wire, 4 mm in diametre, and wrapped it twice around the box ontop of the strapping. The strapping doesn't hold any of the weight, it's there to slow down the rust to the wires, and more importantly it'll hopefully prevent the wires from gnawing their way through the rusty pot by distributing the weight over a larger surface.
I made eyes out of the ends of the wire, and fastened them with a double wire lock with thread lock, and a piece of washer fluid hose on the wire to protect the rubber mounting. There's quite a lot of measuring going on throughout this process, but it's also fairly straight forward.
The nice thing about this system is that you can lower and hoist the box as you please (although it requires a little bit of work), and you never need to take your rubber mountings off again! It's cheap as well!
So far, which admittedly isn't long, this has been working excellently for me. In time we'll see if it holds up.
I bent the sides of the galvanised strapping to make sure the wires wouldn't jump off. It seems to have worked, but in hindsight I think I would've used som small jubilee clips or something. It probably overthought it, and made some unnecessary work for myself.
My only concern now with this setup is that it isn't stiffed between the box and the rubber mountings. Maybe you guys can weigh in on whether you think the exhaust box might snap in half from the bumping?
Cheers!
