Hey truckers, im working on my motorized lego truck atm. Im inspired by Wester Star older trucks (like in the pic attached), my model is pretty big and motorized (will be remote controlled via phone and shit)

I have maybe a stupid question.

What are the width of front axel relative to rear two axels? I cant tell from pictures, it seems like the front steering axel is shorter than rear load-bearing axels. Is it true?

Also, which rear wheel pair is driving? Are both rear wheel axels engine-piwered, or just the last one?