I looked at swapping in a toyota 2LT turbo diesel into my 4Runner.
Looking at the prices people charged for the blocks, rebuilding the block, getting parts, etc. I decided that going with aToyota Turbo-Diesel just wasn't a worthwhile swap. I rebuilt teh 3.0 instead (though I should have done the 3.4, retrospect is always 20/20).
The biggest issue I had with the 2LT was getting parts.
Most parts for the Toyota diesels just aren't available in north america. You have to special order the parts from Japan and it's 6 weeks to get them.
It was just going to be too much hassel to deal with Especially for a rig I daily drive.
that said, if I lived in a place wehre the Toyota diesels are imported, that woudl be a different story