Yes, we can mount a custom Linux ISO of your choice to your KVM VPS service with us. There is no fee for this. Here's how:
To do this, open a support ticket with the subject "Custom ISO Mount Request" and in the description, specify the direct download link to the iso file you'd like for us to mount (file must end in .iso and be a direct download link)
We will then process your request in a timely fashion, and once we reply to you confirming it is mounted, you will be able to complete the OS installation via the HTML5 VNC console in our SolusVM control panel.