You will get stock RHEL kernel by doing that. Anyways, why do you need
exactly centos kernel? As you can see below -- it's just stock RHEL
one but with some slight changes which doesn't affect functionality.
> --- kernel-rh.spec
> +++ kernel-centos.spec
> +* Mon Jun 27 2011 Karanbir Singh <kbsingh@cent...> [2.6.32-71.29.1.el6.centos]
> +- Roll in CentOS Branding