I stumbled upon an 89 (i think) Toyota 1ton dually, 2wd, with a fuel injected engine. Thats all I know about it until monday. my question is did they ever come in 4wd? What engine is most likely in it? 3.slow? or maybe the 22ret? tranny? G58? how difficult would it be to convert to 4wd? as simple as finding axles+springs+tcase+all the mounts? Are these really 1ton rated? Like i could pull my hilux or some hay around on it?