You will have to change the gearbox, exhaust, radiator. Depending on which gearbox you fit you can get away with using your original tailshaft and diff ( till you brake it) then you'll need a ten bolt diff. You probley should fit v8 springs as well for handling but you can get away with your originals for a bit. I would buy a wreaked stato (WB or HJ to HZ) and use it for a doner vehicle you could even convert the diff to fit if keen.