read this youll want to
HUMMER H2 Will Get 4.5L V8 Duramax Diesel
The day many HUMMER H2 fans have been waiting for has arrived, General Motors has announced that H2's will recieve a V8 Duramax Diesel engine option sometime after the 2009 model year. The small-block diesel V8 engine being put into the H2 will improve fuel efficiency by 25 percent and reduce CO2 emissions by 13 percent making this one of the cleanest diesels ever produced..read more.
Its not a 6.6l though its a 4.5 litre small block, here read more...
http://gmhummer.com/