If you get a body & Chassis for just say 10k; Then apart from a engine and gear box, you need to go in for braking system, clutch system, suspensions, electrical wirings and fittings, new tires(5), maybe wheel discs, tinkering and painting, steering system, upholstery, diesel tanks and lines(sure they would be rusted and pretty useless), differentials if you are changing to diesel, RTO for paper work... I am sure you will end up shelling out at least 1.5 lacs apart from body and engine...!
Best option is to get a MM 540 or a CJ500D that is in running condition... You wont need more power than a 540 Peugeot engine for more than 85% of your work. The international engine that comes as part of the CJ500D though a sluggish and noisy engine packs lots of low end power. After all that is the heart of a MM Tractor, which is wat most of use to pull out 4x4s that get stuck in the mud...!
Just as Dinar said you can go in for a Jonga. But remember it is not a beast that is easy to maintain. You will certainly have to change the petrol engine as the mileage of a Jonga petrol engine is around 5-7kmpl! Moreover in smaller towns the Jonga is getting rarer and so are the parts...
And pls tell me what are you going to do with all that power on a Jeep? Drive the jeep up a wall

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