Thnx DeeDee, Its Nissan Patrol Pickup, 2002 Model, Its got a TB45 engine, i.e 4500CC Petrol engine (with electric fuel pump and carburetter) Produces 200bhp and 350nm torque. Very nippy indeed, did few short drags with Shababs's Safari Cruiser (with 1FZ) and it could match it.
Now I have got same issues as you..... i.e no weight in the back dala, so rather bouncy, well a lot bouncy compared to TLC, hence also lack of grip at the rear. Can carry plenty payload on the rear bed, rated at 1.15tonnes (hence the extra bouncy ride), 8 heavy duty leaf springs do help digest your food easily on every trail. Thinking about various suggestions given so far about how to add weight at the rear.