Demo - 450b High Gain

We are currently trying to install a demo link, but we faced below issues, Is there any work around?

1- Power source, We are currently using AC PoE, While our customer required to use DC PoE, Is it available for ordering?
2- Bracket, Provided bracket could be installed on 2” pole, while customer requiring to be installed on 4” pole, Is there any work around?

I don’t know if Cambium sells a dc POE injector for 24v devices, but something like this will work, depending on what dc input voltage you need:

You need a pipe-to-pipe or other adapter to mount a 450b on a pole bigger than 2". Consider something like this from MTC: