Ryan,
I have a picture out of a Jonas Taxidermy Supply catelog of a great Bighorn pedestal mount, but I don't know how to get it to you in an email. I actually used the same form on my Bighorn mount only I had it modified into a wall mount with some habitat with it. One thing I wish I would have done was had the taxidermist modify the form so the nose of the sheep was raised up a little more than it is. To me sheep always look better with their nose raised up. It tends to make them look more impressive and shows off their horns. Just my opinion!
You got a pig of a ram, and it sounds like you know what you want. I love the idea of having the dead head at the base! Make sure you get us pictures when it is done. I'll try to get that picture scanned and send it to you.
Rick