I after installing Fedora7 I thought I'd take a look at the stats the project had gathered, I saw some centos devices, but couldn't find a rpm.
I've had a go at building one, it mostly works (this is my nagios box), it's a rebuild of the f7 source, I have to frig about with the spec file, so I've published my source rpm here, search for Nick in the .spec file, you'll see my bodge.
The smolt rpms are in my yum repo, feel free to download the packages and have a go.