Somehow I overlooked these pics on the last reply.
You can see how I mounted the axle here.
Here is another of the servo. I used the epoxy liberally on the area that butts up to the chassis and all around the bottom of the servo, which is seated in a notch I made for it.
I figured since I had to re-post I might as well include the following shots.
Here is the sabertooth dual 12A motor controller. It looks quite nice as RCP57 said.
I am very pleased with how this tire/wheel combo fit. I will paint the rims yellow though so they hopefully match the machine.