Spent a good bit of time hacking at this beast with my Dremel and drill. The base was pretty heavy so I drilled a bunch of lightening holes while at the same time opening up the front ladder entry spots. You can see the blue markings where I still need to shave it all down to make room for the internal levels buildup.
I also used a cutting bit to open up the roto-cast pieces (there are some THICK spots!) and removed the front door. I also hollowed out one of the side entry ramp sections.