Nissan D21 Body problems by year

Upon purchase of vehicle...Previous owner stated that at 32,000 he had to have the frame plated on both sides in front of rear wheels... Do to excessive rust and cracks.I just recently purchased this vehicle with only 57,000 miles on the truck now as of 5/15/2014. The truck sat for the last 3 years because the frame had progressed to the point of non drive ability.Both side frame rails from the rear to the front axles are hanging by the fuel and brake lines. Researched the salvage yards an all suitable donors are...

Vehicle was lifted on hoist, and literally broke in half. Frame was not visibly damaged prior to incident, and had only small amount of surface rust. Rear end of vehicle smashed to ground from 4 feet in the air. Very lucky someone was not under it working at the time. Frame extremely weak with no visible signs. Vehicle had less that 125,000 miles on it at the time of failure. *Tr