[marius]

Thanks Taz. Some of their numbers don't add up. I had a 2003 Tahoe that ran in 2wd all the time, had the 5.3L auto and the best I could get on it was 18-19 MPG. Now the Manual tranny would add say 2MPG. The Tahoe is almost 3000lbs lighter too. I just don't see how a 6.0L with a 8500 weight even with a manual tranny can average 22-26 MPG.

Another thing is my need to increase towing capacity with the diesel. I have a 32 foot travel trailer that when loaded weighs about 7500 lbs. The H2 pulls it fine now but the extra torque and HP from a diesel set-up would make it fly.
I also have a 1981 MB 300sd that I restored this year (took me 5 months and $6000) and form a pile of junk it bacame a vehicle I proudly drive to work every day. A neighbour offered me $7000 for it and I will take it when I find the place to do the H2 conversion. What can I say..I like diesels had 4 so far.