This barricade is from the Ork Mekboy Workshop boxed set.
The parts on the plastic sprues within the box are quite thick and chunky.
This one has part of the Megatrakk Scrapjet within it, and the radiator from the Rukkatrukk Squigbuggy.
I then gave the model an undercoat using a spray of Corax White.
The bit of Dakkajet was painted red, whilst the bonnet was painted yellow.
Painted the rear of the bit of Dakkajet with some more red paint.