found one today, might buy it for a trail (river) only heep...I mean jeep

. It is all original with the high head. I was told that the diffs are factory and that the rear is a 1/4 turn or posi, and the front is a manual lock out. But the seller said that when you lock the front hubs in, it is a locked diff...that sound right, or are they more likly open diff. also anything I need to look at before dropping $1500.
Thanks