Where would I be able to buy just the wooden mount piece that is used for mounting deer heads?

Google Van Dyke's Taxidermy Supply

JW

Go to taxidermy.net
They have tons of souces for taxidermy supplies

You could just try a simple Google search for 'deer skull plaques' there's a bunch of available sources. Dont forget the wall hanger if you want to hang it on the wall

I cut mine out of 3/4" or 1" plywood in the shape of whatever state I killed the deer in and have a woodworker friend route/bevel the edge. Makes a good looking mount and inexpensive.

This place has steel panels in different patterns and in different state/country outlines. Definitely check them out! They also have a bracket so you can hand ur skull anywhere without cutting or drilling into it!

http://headsofstatepanels.com/brackets/