[Adorapuff]

2.6.32-220.7.1.el6.x86_64

What we're mainly interested in though, is everything before the hyphen (-).

I'm going to disagree here.
I've run into many kernels that start with say the 2.6.32 as mentioned, but the revision removes the vulnerability. At least go right after the hyphen to 220. You should be fine running the 2.6.32 exploit, but if it does not work try and be more specific.
Never the less, great tutorial BreShie. Now kiddies, don't havij a site, find a vuln on exploitdb, figure out how it works, what causes it, and understand the exploit code. Using that exploit you understand, go and "pwn a site", root it, and have some fun. I guarantee its more fun then havij (From personal experience as I used to use havij in the past but not any more), a lot more satisfactory, and you understand whats going on so you can learn something. Now that you can dissect 0days, you can write your own. exploitdb is flooded with wordpress themes for a reason. Its because for the most part, they all have the same vulnerabilities going on. Download some themes from mafiashare and find some vulns, release them, and don't be a skid.

tldr; read it