H3 factory upgraded using low mileage 2012 colorado truck
 

I have pulled out all these parts off the chevy colorado that was rolled while in tow with 9400 mile on it. Does anyone have any knowledge to add or wish to find out as we do the 300 hour project in our boat shop.

Report from boat yard san diego's engineering dept:
Hummer H3 2007 parts that seem equal and a direct swap with
chevy colorado parts: 2008-2012
main engine
tranny
fuel and hydraulic lines
wiring harness
front differential and truck switch to disable AWD
front brakes
front axle
front shaft
exhaust, both old a new were cracked behind heat guard, if you smell exhaust take it off and grind it out then weld.
front seats
dash
gauge cluster
steering wheel and key
stereo, speakers
overhead cabin lights
radiators and evaporator
alternators
HVAC
Computer
ECM
Heating fan
fuel lines
steering rack and pinion
front and rear differential gears

Many of the parts listed will not directly swap to an H3. Good luck with the adventure you are about to take on.