maulerfiend, aka; It has legs, I know how to use them

Well, I got the fever again. Like my feelings on the Defiler, I was never happy with the Maulerfiend that GW put out. Looked too much like a He-man toy for my tastes. As soon as I saw the Adeptus Mechanicus Onager Dunecrawler I knew I had found the base for what I wanted. So, I ordered some bits and picked up the Dunecrawler this morning. My idea is to build something that looks like a larger Bloodslaughterer using the front portion of the Maulerfiend torso, the Heldrake arms and the Dunecrawler legs. It should look something like this shitty sketch;

I started filing and cutting on the torso today. Trying to figure out how to fill out that back portion and how the hell to attach the body to the legs;

I will post more WIPs as I go.

Oh, also, I ordered this guy. Of course, I am not going to build him as is, but soon enough I will turn him into something far more foul...;