Also see Andre's Shoumatoff's diesel engine swap webpage...
 

Engine Power Outputs:
The 2F lists at 135 HP and 210 ft-lbs Torque
The 2H lists at 103 HP and 177 ft-lbs Torque
The 1HZ lists at 135 HP and 187 ft-lbs Torque
The 12HT lists at 135 HP and 231 ft-lbs Torque
The 1HD-T lists at 165 HP and 268 ft-lbs Torque
The 1HD-FT lists at 168 HP and 280 ft-lbs Torque

For more infomation on each of these engines, you may want to see
Andre Shoumatoff's Web Site about different Toyota diesel engines.
Or Rob Mullen's Toyota Land Cruiser FAQ.

Disclaimer on the information on these pages:
Take all this information with a grain of salt - Much of the installation
information is what we have heard, and not experienced first hand.  Some of
it we have been able to interpolate for ourselves, and some we have been
gracefully guided too.  If anyone can confirm or deny what we have listed
below, then please let us know.  We would like this to become a centre for
information on stock LandCruiser exotic engine (to North Americans anyway)
swaps.   If you would like to provide details of your conversion, and a
similar conversion is not listed, then please send it our way and we will
give you your own detail page.  If you have a conversion site of your own,
and would like it linked to from here, please e-mail us the link.