I actually accomplished a little on this one over the past few days. I very pleased with these tanks from Auslowe, and the tires from Double Take are pretty awesome. Tanks are mounted and engine is mounted. I also upgraded the radiator for the 3406 and the 9000 has a larger one than the 8000 in all the pictures that I can find.
IMG_E8210 by Brian Smith, on Flickr
IMG_8230 by Brian Smith, on Flickr
IMG_8231 by Brian Smith, on Flickr
IMG_8232 by Brian Smith, on Flickr
IMG_8233 by Brian Smith, on Flickr
IMG_8235 by Brian Smith, on Flickr