@sherwan: I think that the body would have to be locally fabbed as $20K+duty is a lotta dough for any panga project. It would be nice to able to spend some time with an original H1 around town to copy the whole thing first hand.
The other thing is that there is actually a 20 inch width difference between the H1 and the Nissan Patrol bodies and around 15inches on the wheelbase. After some initial searching, I believe that a Dodge M880 Power Wagon Pak Army auction chasis is better suited for this conversion with 6inches width deficit and around 4 inches on the wheelbase.
Also messing up a 1990 Nissan Patrol (which is still worth a few lakhs at least) does not seem all that fair if we can get the M880 chasis for a few thousand rupees.
Anyways lets see how things go, but to do this right will be one hell of an undertaking