I added some armour plates using plasticard, which I "distressed" with a craft knife.
I used some spare Imperial track to add some more armour.
Slices of plastic rod were then added as rivets to both the front...
...and the back.
I added some rivets to the frontal armour plate and used the searchlight from the Chaos Vehicle sprue.
I also drilled out the exhaust as well.
The next stage is the undercoat.