That full rig, truck and trailer will run WELL OVER $100k if you or I just went out and paid someone to build it for us.
Here's the link from Gale Banks for a 6.6L 04-06 engine. They do others as well. I'd guess this twin-turbo engine setup to be in the $60k range. That WOULD get you a minimum of 640 hp and 1100 lb-ft of torque.
http://bankspower.com/twin-turbo-engine.cfmThe tranny/transfer case combo, again if you or I purchased it, would run AT LEAST $10k.
The Suburban Gorilla body to a full running vehicle is AT LEAST $30k, perhaps more. Most SG's that I've seen are nice. X4x4's is one of the best looking SG's out there. So I'd lean toward the 'more' side of $30k.
Then there's the trailer. Again, if you or I were to just go out and purchase something like that, I'm pretty sure WE would spend another $30k+. Then there is the genny and all the 'gee-gaws' they put in the popup, so that's money spent as well.
So yeah, call it $100k PLUS.