its that ez-start motor that crank the engine over at the oush of a button, also nhill, take your diff apart, its the diff, cuz if the spur is fine, clutch bell is fine, all the gears in the tranny are fine, your diff out put yokes are fin, then its the diff,if it aint the diff then its striped driveshafts, they have like little igi things that connect the diff shaft to the wheel hub shaft you probably sripped it. if someone doesnt understand tell me i will post pics