@Jayb
Thanks Buddy, Hopes are for the best. 
@hidalgo
Well that's the very topic which hasn't been decided on yet but the original engine is to be scrapped for sure thus, is up for sale too...
(ideal for those who want to covert into a powerful genset)
@All
please pour in your valuable comments relating to engine swap, as for now 3 options are under consideration i.e. 2jz 1kz or the one from Old school the real work-horse 3B.
Engine experts and off-road experts please your suggestions would be very much appreciated. About the conditions it will be put into use would mostly be plain uneven areas of Punjab (agriculture land) with intermittently being put under operation meaning after every month for a week or so! 