i have a friend that has the dual-pot brembos on his bike.
it's done with a caliper adapter like this one (this is nicolas bike)

I use a simple Bitubo shock. Can`t say anything bad about it. It was the cheapest replacement i found a couple of years ago. For me it is a little bit to hard, but the spring tension is easily adjustible.
The only "problem" with this shock is that the rebound adjustment lever is on the bottom. The lever is a little bit too long and touches the shock leverage. As this is just a screw with a plastic cap on it`s head it`s easy to remove and shorten it. Just be careful to make a mark wat which position the adjuster exactly was when you remove the screw so you get to the exact same position when you reassemble it.
After about 4 years the paint of the shock is a bit bubbly and coming off on top. Maybe this is because of low paint quality in combination with the heat from the rear header, I don`t know.

Anyway I think it`s o.k. and as the price is only a part of what the original new part costs it`s even better
Onve in a while you`ll find an original shock on ebay.
Check ebay.de there was one a couple of days ago.

Gerhard

Thank you Gerhard. I'm thinking to buy a new Bitubo shock now.

did anybody calling me?
I fit on my dukess 17" rims and 320 disks, so I had just to fit the calipers in the right point... But if you still have the original brake disks i think you'll not find a pad that can fit well on your brake disk.
Otherwise you can search for 280mm floating brake disk for 16" rim and work on these
Have a nice ride, Nicola