Mepis, decendent of debian. I guess we'll have similar /etc structures then
You might be able to pull this off by removing the rc.d from install.sh, I wouldn't trust me to make the call but with that in mind I think it would be safe modification.
What wouldn't be safe is running an installer desinged around another distro in Mepis. You have no idea what else it depends on that isn't there, or worse it may change a system setting from a perfectly fine value in (Red Hat?) to another value perfectly fine value in Red Hat, but a value that makes Mepis unbootable.
I'd speek to the providers of vpsd and ask about Mepis. Or the other way around.
P.S. check it didn't create /etc/rc.d/* it won't do any harm since the system isn't looking in that folder for anything but its clutter.