I've owned over 10 Mazda b series trucks ranging from 87-93. I am a master mechanic and know all vehicles very well. These are the best trucks that are avail in the United States. Very tough, simple and run forever with very little maintenance. The only ones to possibly stay away from would be the 87&88 b2600 trucks that have a Mitsubishi sourced engine, that was somewhat problematic in comparison to Mazda built engines. The 4x4 trucks are totally unstoppable. They are tall and light, and go through everything, but being top heavy they are easy to roll. I rolled my 4x4 and flipped it back on all wheels, let it sit for 30 min, then drove away, just a bent fender. They are tough!
Probably not the safest vehicle to be in a collision in over 60 mph, but the technology is right out of 1980. in comparison, to others they are just fine. i was in a head on at 35 mph, i was ok, walked away with a stiff neck. it's no Volvo, but unless you are a frail old woman, you should be fine