I was just thinking the same thing. What I love is how real the trucks look. You have to really look close sometimes to tell they're not the real 1:1 trucks. I wish he hung out on here and shared his builds.
Here is why his monster trucks look so real.
I think his vids are edited and using real truck recordings. The slowed down videos give the nearly perfect realistic performance look, which is enough to fool ya. I could be wrong though. If those are actual sound kits.... they are the most realistic sounds I've ever heard in an RC.
I should...
Pretty sure the are heavily modified LMT's.
The first few vids I ever saw, I thought they were real trucks. It was maybe the 4th or 5th vid when I looked a little closer and saw they were RC.