Join Date: Aug 2007
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1. I had been looking for a diesel suburban for quite a while (found at least one I should have bought, but wasn't sure - oh well) when I finally decided to pick up a good gas one with a bad engine and swap it to diesel. I've never seen a stock suburban with dual tanks.
2. Don't know my transfer cases yet - can't help you there. I don't even know what is in my '91.
3. I've wondered about the barn door/tailgate issue also. Mine has a tailgate, and it is missing one of the support cables, so the tailgate is slightly twisted. I think installing barn doors would be fairly straightforward, provided you have access to welding equipment and a complete donor vehicle, not just the doors.
4. From everything I've read, an engine not equipped with a turbo from the factory, or rebuilt with the turbo in mind, will blow out the bottom end if you slap a turbo on it. Otherwise, no great change in economy.