The 460 came with a 2WD C6, I am thinking of just going all out and putting a ZF5 behind it. It is not a daily driver but, a part time work truck. I am not in the least impressed by fuel mileage of the 5.8. I see reading some of the past threads that you seem to be "the guy" around here on this. Can you tell me what is involved in going dual fuel rather than straight conversion? 1GR