These articles might help:
http://public.fotki.com/modeltrucks25thscale/model_magazine_articles/scale_auto_enthousiast/sae_2000-2004/sae_2001_01__januari/
http://public.fotki.com/modeltrucks25thscale/model_magazine_articles/scale_auto_enthousiast/sae_2000-2004/sae_2001_02__februari/
http://public.fotki.com/modeltrucks25thscale/model_magazine_articles/scale_auto_enthousiast/sae_2000-2004/sae_2001_03__march/
http://public.fotki.com/modeltrucks25thscale/model_magazine_articles/scale_auto_enthousiast/sae_2000-2004/sae_2001_04__april/
http://public.fotki.com/modeltrucks25thscale/model_magazine_articles/scale_auto_enthousiast/sae_2000-2004/sae_2001_06__june/
Good luck with your project.
Interesting project. I like the concept. It would have made for an interesting vehicle to fight fires in the Everglades. The Unimog sure is a strange looking vehicle. It kind of looks like a Pug.
Nice looking Ford. I heard that there were issues with the chrome & the tires. Did you find that to be true? Meng was supposed to have that all fixed by the second run. Apparently it has the diesel exhaust for the gasoline engine. Maybe that's how they run them in China.
How are you going to extend the rear of the frame stringer for the log trailer? You need to have about 6ft to 9ft added to the rear of the frame to make the trailer turn properly.
Here is the first truck I built when I got back into modeling. It's the Revell USA snap Peterbilt 359 with Jbot Winslow stripes. The trailer was built much later.