There is a outfit in the states that will convert 00 to 07 yukonXL's or Suburbans with the Duramax Diesel. I called that outfit up once, before I bought my 07 Silverado. There are a few problems to overcome in the Suburban Duramax conversion that one has to think about.
1. The Allison doesn't fit and the Burb has to have a 2" Body lift.
2. The Hydro boost
3. The electronic gas pedal
4. The front and rear air conditioning
Now until here I was fine but then:
5. The computers and modules. That dude that does these conversions had to make his own software to make everything work, so it isn't easy to just yank a D-Max in a Burb, otherwise I would of done mine. Google Duramax Suburban...

DM