I used some brass wire and pinned some styrene rod to make new exhaust stacks. I took the cupola from the new chaos vehicle sprue and glued it on over the open hatch hole. I then trimmed down the hatch I removed and reglued it into the cupola. I added different smoke launchers , front rams, chaos spikes and chaos plates. I have added a combi bolter to both but only one has it mounted in the picture.
I am going to have a combi bolter and a combi meltagun on both, so I have to make a couple combi meltaguns.