UHC base for Onefinity

In setting up my dust hose routing, I noticed the 90-deg stepper base will not work with the stiffy, so I would have to use the UHC base for Onefinity. The challenge I am seeing is that the UHC base for Onefinity only appears to work with drop arms and attachments. What I need to do, since i am using the v10 dust collector, is route the dust hose over the top.

Is there a way to do this with the UHC or will I have to opt for another solution such as the Rowdy Roman solution?

The 90° base does work, you just need to mount your Z in the lowest holes bringing it the highest.
I have a 6" arm, but i have an external brake, but there’s no problem with added height as it’ll ensure motor clearance.