Thanks for the info everybody, that set up is sweet but I'm not looking to spend a lot on it. I think what I'll do is just buy a good ole Jerry can along with the mount, total about $70. The mount allows you to mount the can horizontally which I will do and mount it to the rack some how.

That seems like a cost affective alternative to a full rear set-up which I would go with if I had the flow!

If anybody is interested, here is a good site that shows both the can and the mount I'll probably go with.

http://www.offroadrecovery.com/category/blitzjerrycansandacc/

Thanks again!